Bulletins


BulletinBulletin dateReplacement BulletinItem no.SummaryAdded
FUEL SYSTEM, GASOLINE
SIB-13-09-1008/01/201010037049Ready04/29/2011
SIB-13-09-1008/01/201010037049Bmw: some models equipped with the n54 engine may have an excessive crank time before starting. *rm04/29/2011
FUEL SYSTEM, GASOLINE - DELIVERY - FUEL PUMP
CN-10E-A0212/01/201010040368Bmw service campaign: see document search button for owner letter. there may be a problem with the fuel pump which could not meet emissions requirements. there may be a long crank and a service engine soon light. *rm08/24/2011
CN-10E-A0212/01/201010040368Ready08/24/2011
SI-B-13-03-0910/01/200910029404Bmw: special limited high pressure pump (hdp) emissions warranty of 10 years/120,000 miles. a potential problem that could affect the durability of the high pressure fuel pump (hdp) of certain vehicles. models 335i/xi; 535i/xi and 135is; mo07/08/2009
FUEL SYSTEM, GASOLINE - STORAGE - TANK ASSEMBLY
SIB-16-04-1010/01/201010035009Bmw vehicle: teileclearing for diagnostic module tank leakage (dmtl) system. teileclearing process has been developed to help identify the root causes of customer complaints relating to the dmtl system (e.g., evaporative system leaks, che02/07/2011
FUEL SYSTEM, GASOLINE - STORAGE - TANK ASSEMBLY - FILLER PIPE AND CAP
SB-12-01-0905/01/200910030612Bmw vehicles: service engine soon lamp or check gas cap warning illuminated while driving. software error in the dme for the tank leak diagnostic system. models e60, e61 (5 series); e70 (x5); e71 (x6); e82, e88 (1 series); e83 (x3); e90,10/27/2009
SI-B12-02-0905/01/2009SIB-12-02-0910029684Bmw: service engine soon lamp or the check gas cap warnings are illuminated while driving. when diagnosed, the dme has stored faults for small leak, micro leak, super fine leak, or large leak in relation to the tank ventilation or evaporati07/13/2009
FUEL SYSTEM, OTHER - DELIVERY - FUEL PUMP
CN-10E-A0212/01/201010040368Bmw service campaign: see document search button for owner letter. there may be a problem with the fuel pump which could not meet emissions requirements. there may be a long crank and a service engine soon light. *rm08/24/2011
CN-10E-A0212/01/201010040368Ready08/24/2011
SI-B-13-03-0910/01/200910029404Bmw: special limited high pressure pump (hdp) emissions warranty of 10 years/120,000 miles. a potential problem that could affect the durability of the high pressure fuel pump (hdp) of certain vehicles. models 335i/xi; 535i/xi and 135is; mo07/08/2009
FUEL SYSTEM, OTHER - STORAGE - FUEL GAUGE SYSTEM
SIB-16-08-1006/01/201110039768Bmw: after refueling the tank, the gauge will say 3/4 full inand not full. the guage reads full after driving a little while. the fuel level sensor arm is binding. *rm08/10/2011
SIB-16-08-1006/01/201110039768Ready08/10/2011
FUEL SYSTEM, OTHER - STORAGE - TANK ASSEMBLY
SIB-12-01-1103/01/201110039765Bmw: the service engine soon light is on while driving. this is a programming issue. *rm08/10/2011
SIB-12-01-1103/01/201110039765Ready08/10/2011
SI-B12-02-0905/01/2009SIB-12-02-0910029684Bmw: service engine soon lamp or the check gas cap warnings are illuminated while driving. when diagnosed, the dme has stored faults for small leak, micro leak, super fine leak, or large leak in relation to the tank ventilation or evaporati07/13/2009

Consumer Complaints


Fail datemilesoccurencesPurchase date
FUEL SYSTEM, GASOLINE
05/25/201128700
 Three wks ago my 08 528i was making a rattling sound in the engine, tin-can sounding. took the car for service & they replaced my lifters and related parts. they said that the lifters are known for going bad on the 5 series and it's typically due to seasonal changes. when my husband brought the car home to me i was very upset because the noise was still there, not as loud as before. i called bmw and made another appointment, citing that this problem had not been resolved and it needed to be looked at again. the appointment with a loaner could not be scheduled for another 10 days, so we waited. during those 10 days the vehicle started to take longer to turnover at start up. i would also feel the engine lightly shuttering as i drove at speeds averaging 35-50 miles per hour. monday 05/23/11 was my requested appointment; however because my 15 mo. old baby was ill we had to cancel. thank goodness we did because my car would not have made it the 20 miles of freeway to the dealership. today, 05/25/11, i made a left out of my neighborhood and as i accelerated approx. 50 yards, my engine bucked (felt like the bottom fell out), i lost speed dramatically. suddenly, steering became nearly impossible and i was forced to turn into a small shopping center. however, i lost ability to steer upon entering the parking lot. my car would respond to nothing but the breaks (thank god those atleast worked). i looked down at my gear shift to attempt to reverse away from the curb and maneuver into a parking space, though my car was thrown into neutral & would not respond to anything but park. i attempted to startup again but engine wouldn't turn over. it was dead. within moments my abs, check eng, and battery lights illuminated & corresponding msgs came onto my communication screen. car was towed. awaiting dealership response in the am. after seeing prior complaints, i see someone needs to be fired. the us government needs to step in before people die! thank god my baby wasn't with me!
03/27/201121088
 Engine malfunction! reduced power was the message i received on my dash display. i took photos of the displayed message. car went from 65 mph down to 18 mph in a matter of seconds in the far left lane of the interstate highway. could have been killed. had to chug and lurch over three lanes of speeding traffic to get to the right shoulder of the road. i've already had the fuel pump replaced by bmw recall (a recall that i was never notified by bmw that the recall existed). apparently the fuel pump recall was not all of the problem as this same engine malfunction still occurs and the car still behaves the same as before the fuel pump recall. took the car to the dealer the very next day. he cleared a code in my onboard computer and did nothing to fix this problem. this problem with my bmw 535xi wagon is going to get someone in my family killed or seriously injured. i've read multiple complaints online from bloggers regarding this same problem. why is bmw not fixing the problem. at the time the fuel pump was replaced the dealer also reprogrammed my car's onboard computer and checked the fuel in the tank which, according to the dealer appeared to be fine.
07/15/200935000
 The car showed engine malfunction sign without warning in middle of busy street. all power, steering, everything went dead without warning. i couldn't move the whatsoever. i was lucky enough to make a right turn before this happened and avoid potential accidents.
11/12/201018000
 Purchased a 2008 bmw 535i in june 2008. vehicle has 30,000 miles on it. about six months after purchasing the vehicle, started to have the engine malfunction/reduced power light come on about every three months. two months ago, the same thing happened but the vehicle shut off at a stop light. had the vehicle towed and the fuel pump was replaced. had the vehicle back for approx two weeks and same thing happened again. had the vehicle towed. they replace some fuel injectors and spark plugs. had the vehicle back approx 3 weeks. happened again. luckily still not on the freeway. drove the vehicle in to the dealer. they replaced more fuel injectors. had the vehicle back a week and the vehicle shut off on the freeway in traffic in los angeles going 65 mph and almost was in a major traffice accident. called the dealer today (saturday) and the service dept is not in on weekends. sales manager said take the vehicle somewhere else and it won't affect us if someone is killed or injured and a lawsuit is filed. afraid to drive the vehicle at this point.
07/15/200935000
 The car showed engine malfunction sign without warning in middle of busy street. all power, steering, everything went dead without warning. i couldn't move the whatsoever. i was lucky enough to make a right turn before this happened and avoid potential accidents.
11/12/201018000
 Purchased a 2008 bmw 535i in june 2008. vehicle has 30,000 miles on it. about six months after purchasing the vehicle, started to have the engine malfunction/reduced power light come on about every three months. two months ago, the same thing happened but the vehicle shut off at a stop light. had the vehicle towed and the fuel pump was replaced. had the vehicle back for approx two weeks and same thing happened again. had the vehicle towed. they replace some fuel injectors and spark plugs. had the vehicle back approx 3 weeks. happened again. luckily still not on the freeway. drove the vehicle in to the dealer. they replaced more fuel injectors. had the vehicle back a week and the vehicle shut off on the freeway in traffic in los angeles going 65 mph and almost was in a major traffice accident. called the dealer today (saturday) and the service dept is not in on weekends. sales manager said take the vehicle somewhere else and it won't affect us if someone is killed or injured and a lawsuit is filed. afraid to drive the vehicle at this point.
07/15/200935000
 The car showed engine malfunction sign without warning in middle of busy street. all power, steering, everything went dead without warning. i couldn't move the whatsoever. i was lucky enough to make a right turn before this happened and avoid potential accidents.
11/12/201018000
 Purchased a 2008 bmw 535i in june 2008. vehicle has 30,000 miles on it. about six months after purchasing the vehicle, started to have the engine malfunction/reduced power light come on about every three months. two months ago, the same thing happened but the vehicle shut off at a stop light. had the vehicle towed and the fuel pump was replaced. had the vehicle back for approx two weeks and same thing happened again. had the vehicle towed. they replace some fuel injectors and spark plugs. had the vehicle back approx 3 weeks. happened again. luckily still not on the freeway. drove the vehicle in to the dealer. they replaced more fuel injectors. had the vehicle back a week and the vehicle shut off on the freeway in traffic in los angeles going 65 mph and almost was in a major traffice accident. called the dealer today (saturday) and the service dept is not in on weekends. sales manager said take the vehicle somewhere else and it won't affect us if someone is killed or injured and a lawsuit is filed. afraid to drive the vehicle at this point.
10/28/201022750
 I purchased a certified, pre-owned 2008 bmw 535xi with approx. 22,000 miles on 10/23/10. subsequent to my purchase, i discovered the high-pressure fuel pump in the vehicle had earlier failed and been replaced. on 10/28/10, just 5 days after purchasing - i was driving on a surface street when the car began violently shaking and rocking, the engine lost substantial power and nearly stalled, and the engine malfunction indicator lit. i took the vehicle in for service on 10/28/10 and the vehicle was returned 10/30/10. 3 of 4 fuel injectors were replaced along with all sparkplugs. at high speeds, this type of engine malfunction would pose an extreme safety risk in my opinion. i have contacted bmw usa and the dealership where i purchased the vehicle and i have not been satisfied with the response to-date.
10/26/201060800
 2008 bmw 535i. engine start-up takes longer than normal. the engine idles rough and hesitant to accelerate and check engine light comes on. bmw claims to have fixed the problem under a recall, but the problem came back again 3 days later.
09/09/201027042
 While accelerating, the engine lost power and went into neutral. i was able to put it back into drive and the car very slowly regained momentum. a few minutes later, after the car had been turned off, i restarted it, put it into reverse to back out of a parking place, put it into drive to move forward, tried to accelerate, the car went into neutral again and would not move forward. i tried to put it into drive again but with no success. the car was dead and and message flashed on reduced engine power. fortunately i was in a parking lot and not on a highway. the car had to be towed to the dealer. the rmfd high-pressure pump had to be replaced. bmw told me that this was a common problem and that the warrenty on this part had been extended to 10 years, 120,000 miles. the old part is not available.
08/12/201032000
 I had my car in for routine service two weeks ago, and i mentioned that the car had been slow to start in the morning, and idled roughly. i was told that the car was 'reprogrammed and that should take care of the issue. yesterday, while i was driving on the highway, the engine malfunction light came on, and the car lost acceleration, and i had to pull over on the right, through 3 lanes of rush hour traffic with a car that barely accelerated. i took the car to the dealer who said it was a bad sensor. this morning, my wife was driving the car with my 3 month old daughter and the engine malfunction light came on again. my wife tried to find a safe place to pull over, but the engine died at the light. she started the car again, and made it halfway into the intersection, and the car died again. she was very worried that she was going to get hit while stuck in the intersection. finally, after a few more cycles of starting the car, going a few feet, and the car dying, she was able to get the car into a parking lot. the car was taken to the dealer again, and now they are changing the high pressure fuel pump.
05/19/20107000
 The n54 engine in the bmw is a hazard-i almost got killed when my car stalled on the road-bmw replaced the hp fuel pump 3x already and the car is less than 3 years old. these engines need to be replaced as there is a design flaw. do people have to die to fix the problem?
05/10/201041000
 2008 bmw 535i took my car into dealership due to car running rough. they couldn't find anything and sent me on my merry way. took my car in on monday, may 4 due to car running rough and ticking noise in engine...told them we were going on a 1,000 mile road trip the end of the week. they couldn't find anything but did replace some brake items. driving home at the end of our trip, on acceleration my car 'skipped' three times....a couple of minutes later i tested it and accelerated again (on fl turnpike) it 'skipped' hard again three times. got off at the next exit...at the light i got a 'engine malfunction' light and limped into the 7-11. put gas in car, called bmw concierge. we were close enough to home to have it towed to the dealership, get a driver to help us transfer all our luggage etc, and take us home. next day called dealership...they had car day and a half and said it was the fuel injector pump. i understand from tons of bmw owner blogs that this is very common occurence...we were fortunate enough not to be going 65 miles an hour in front of a semi like many other family's have the misfortune of. i also understand that people have had to have this replace not one, two, or three times but continuous...four! this is absurd. where's bmw's integrity to do the right thing, address the situation, and not put their consumers in harms way. do we near a near death experience or our family's filing lawsuits once we're six feet in the grave for them to stand up and take care of these problems once and for all????
04/16/201038202
 While driving at highway speed, the car began to run very roughly. a warning light and warning message appeared, indicating that there was an engine problem. we pulled off the highway and into a parking lot. we stopped the engine, waited a few minutes and restarted the car. the car continued to run roughly but there was no warning light or message. we continued on to our destination (shopping). when we finished our shopping, i started the car and it continued to run roughly and the same warning light and message appeared. i wanted to drive the car to the dealer for service but when i pulled out of the parking space the car stalled. i restarted the car, drove it about 100 feet into another parking lot and had the car towed to the dealer. when i described the problem at the dealership, a service rep indicated that they thought it was the fuel pump. i heard that this has been a recurring problem. the dealer was not able to replace the pump without getting authorization from bmw because bmw had has so many fuel pump problems. a failure at highway speed that would cause the car to stall is a dangerous condition.
04/19/2010265001
 I am reporting known failures and an unofficial recall (see web link to bms service report) of high pressure fuel pumps for 2008/2009 bmw cars with the 3 liter twin turbo engines. when these fuel pumps fail there is an immediate reduction of power and the car goes into limp mode. bmw has recently extended the warranty on the fuel pumps to over 100k miles and 10 years, but i am concerned that there has not been a formal safety investigation by the us government (that i know of) or a formal recall by bmw since this is a potentially dangerous situation if cars suddenly slow at highway speeds. i am the owner of a 2008 bmw 535, it is now having problems starting in the morning and i am now concerned about when/if my fuel pump will fail - to the point i will no longer let my wife drive the car. www.bmwblog.com/2009/03/.../more-bmw-fuel-pump-news/ http://www.e90post.com/forums/showthread.php?t=181600. *tr
11/13/2009130001
 High pressure fuel pump went out on me on the highway. the car stopped real fast (not to a completion), could have caused a major accident. thankfully nobody was behind me. *tr
09/15/2009230001
 Failure of the high pressure fuel pump (hpfp) in my 2008 bmw 535i. car lost power on the highway and caused a unsafe reduction of speed being the car by design will reduce power during the failure to save the engine. *tr
06/01/2009200001
 I am reporting two failures of the high-pressure fuel pump on a 2008 bmw 535i. the first occurred about one yr after delivery resulting in the car having to be returned to the dealer in limp mode. a year after the hpfp was replaced, the exact same failure occurred, and the pump was replaced for a second time. imo, this represents a serious safety defect that bmw seems incapable of correcting. *tr
11/21/2009190001
 Loss of power to car: 1 turbocharger replaced loss of power to car: fuel pump replaced loss of power to car: 3 fuel injectors and 3 spark plugs replaced. *tr
05/19/200957851
 Was driving at highway speeds when car began to sputter causing rough ride. after another 5 miles, the engine warning light came on. i pulled over to the side of the road, stopped the car, then restarted it. the light disappeared, but reappeared after another mile of driving. contacted bmw who said the car was safe to drive. service center found that it was stored fault codes, which a previous service bulletin had advised. these fault codes were cleared and the car functioned properly. please note: this is for a 2009 bmw 535i. the choices available for 2009 bmw's do not include the 5 series. *tr
07/17/2009220001
 2008 bmw 535i, with sport package with 3.0 ltr twin turbo engine. twice since purchasing new on 1 august 2008 the engine malfunction-reduced power warning appeared. in both cases warning light disappeared after driving between 25 and 40 miles as did the lack of power. car also occasionally starts with rough idle that disappears within less than a minute. car is in the shop now for the first time and initial reports show record of misfire event. issue could be very dangerous if it happens at a very inopportune time such as when acceleration is required to safely blend into traffic. needs definitive fix immediately! multiple complaints on line in many forums suggest that fix is not yet available from bmw. perhaps a redesigned high pressure fuel pump is required vice a replacement with one of the current design. *tr
03/28/2009360001
 This car was purchase brand new on 12/12/2008. so far the fuel system has failed four time. fuel pump twice and injectors twice. the car suddenly looses power due to this issues. my car has 36k miles. having looked at news groups, a lot of people are having similar problems with this model. *tr
02/04/2009155001
 1. rough riding - loss of power on highway 2. dozens of times over the last few months. car has been in shop for two months out of last 12 for the same issue. 3. bmw keeps trying different things but no final fixes as yet. *tr
01/17/2009164951
 I want to voice my utmost dissatisfaction with my 535i(customer #113894) thus far based on following details. service date: 5/22/08, mileage: 7592, vehicle experienced difficulty starting ignition. your service department replaced high pressure fuel pump. service date: 1/17/09, mileage: 16495, vehicle displayed message, engine malfunction, reduced speed then engine stalled during driving in 5 freeway. your service department replaced high pressure fuel pump. latest episode happened driving in 5 freeway with my two kids in back seat. car stalled in the middle of freeway and i've had close call with semi truck coming right behind me. i thought he was going to slam right into me! needless to this experience have given me a scare and fear for my kids' safety, which prompted me to file a complain with nhtsa. this 535i is my first bmw and it will probably be my last one. i've had acuras before this vehicle and had not had this type of life threatening vehicle malfunction. *tr
01/14/2009112031
 Second high pressure fuel pump failure in less than 2 months ( first one replaced the 2nd week of december 2008 had another fail today on the way to work 1/14/2009). the high pressure fuel pump (hpfp from now on ) on the n54 motors from bmw has become a major issue spreading across 3 different lines ( 1,3,5 series) , some thing need to be done quickly, since buying low content ethanol fuel is nearly impossible. this was the excuse i was given, failures due to high ethanol content ( above 10%), drivers have no way of testing at the pump how high the content is except for the labels on the pump. *tr
11/10/2008180001
 High pressure fuel pump keeps failing. loss of power. *tr
08/29/20086001
 I have a 2008 bmw 535i with sport package and premium package. i have had an engine malfunction/reducing horsepower issue with this car 3 times since purchasing it in august 2008. the first incident occurred within 3 weeks of delivery and only 600 miles. the second incident happened about a month later with approx 1500 miles; and the third incident occurred on 11/3/08 with approximately 2200 miles. bmw says each time that it's a misfire in one of the cylinders - but that they do not know how to fix it. so each time they reset the computer and send me away. this is a very dangerous situation. i drive on california freeways most of the time and when this engine malfunction occurs, the car starts limping and missing and i have to slow and pull to the side of busy, busy freeways that are very dangerous. bimmerfest forum shows that there are lots of owners of the bmw 535i having this same problem - but bmw will not address the issue...... each time the problem occurs, the bmw dealer asks me what kind of gas i'm using - and it's always been 91 octane. then they ask me what brand - which is chevron, though i didn't realize the brand of gas would be a problem in modern day cars. this is a very dangerous situation to be occurring on the california freeway system, not to mention any freeway system given the speeds at which people drive and the danger of power loss in the middle of traffic and having to pull over on very small shoulders where other cars pass at high rates of speed within only a foot or two of my car when the engine malfunctions. *tr
07/02/200850001
 2008 bmw 535xi wagon. engine misfiring/losing power at highway speeds. dealer first reset computer..happened again. dealer replaced fuel pump..happened again. dealer replaced a cylinder injector....good so far. *tr
09/26/200810591
 I bought a brand new bmw 525i m sport which has done 1000 miles. it is just 6 weeks old and the high pressure pump (hpp) went bust. i just can't believe it. i buy a car with my hard earned money and this happens. bmw should realize the impact it has on someone who expects a lot from his car since he is paying out of his nose. *tr
09/07/200880001
 Added exxonmobil gas 9/2/2008. car dead by 9/7/2008, after driving approx. 50 miles. the fuel pump on this very new car has failed. the dealer claims the gas was bad (says alcohol level tested to 15%), while exxonmobil insists the fuel was fine at 10% alcohol, from the ethanol. i believe the real problem is that the 2008 bmw 535xi's can't handle even 10% ethanol, so the fuel pumps are failing. *tr
FUEL SYSTEM, GASOLINE - DELIVERY - FUEL PUMP
03/18/201037500
 Tl*the contact owns a 2008 bmw 535xi. the contact was driving approximately 65 mph. there was a sudden reduction in the engine power for 30 seconds. the engine shuttered and stalled without warning. the vehicle was towed to an authorized dealer and the fuel pump was replaced. the failure occurred intermittently. the vehicle was taken to the dealer on a separate occasion and the computerized system software was updated. the vehicle was being diagnosed by the dealer when the complaint was filed. the manufacturer has not addressed the fuel pump failure. the failure and current mileages were 37,500.
FUEL SYSTEM, OTHER
02/09/201012925
 My bmw 535xi started having fuel pump issues starting around 14 months after purchase, at 12,000 miles. the first time it went into safety mode, casing it to slow down to a snails pace. a new fuel pump was installed. the second time it would not start in a parking lot after turning it off for 10 minutes after a 20 minute drive. i called road side assist and they sent a technican who was able to get it started. he told me to take to the dealer but it should be fine to drive home. i left the lot and within 3 minutes it completely seized and lost all power while acclerating in the left lane. my 11 year old daughter and i were in the car. i am thankful we survived. i called the technican back and he convinced me to drive the car with him following to the dealer (approx 3 miles). when i complained to bmw they did not showed no ll concern that we were put in harms way. in this instance the fuel temperature sensor/pressure sensor had a permanent failure. at 19,000 miles, the check engine light went on and i took it in to the service department. they suspected the fuel pump but could not replicate the check engine light, so corporate would not allow replacement. again at 20,370 mile, check enine plus cold start not running on all cyclinders no action because not tripping corporate specifications. at, 21,092, high pressure pump permanent malfunction. engine was flooded with fuel. five days and 100 miles later, the engine flooded again. this time the fuel injector was leaking and all the spark plugs were soaked with gas and half were not working. at that time (nov. 2010) i asked bmw to take the car back. bmw agreed to a trade assist that will cost us an additional $33,000 to be get a new car. we do no understand how after almost killing us we cannot get out of this car without spending more money. we refuse to sell our problem to someone else.
09/02/201035000
 2008 bmw 535i - car has had 3 fuel pumps, 3 separate visits for plugs / injectors, last visit for replaced fuel pump created large fuel leak in car which resulted in tow to dealer. engine malfunction light problem. hpfp, repeated engine program.
11/01/2008
 1. vehicle loses power 2. engine malfunction light comes one. 11/2008, 2/2009 & 4/2010 3. gas fuel pump replaced 3 times in 18 months
11/06/2009277573
 The vehicle has been hard starting; most recently the engine stopped completely and suddenly while driving at high speeds during morning traffic from new hampshire to boston, ma. and had to be towed. there was possibly some indication of gasoline odor inside the vehicle. the bmw dealership reports numerous complaints about the fuel delivery system in its late model vehicles yet i have had no warnings or recall notice from the factory. two attempts were made to correct this condition but the problem still exists . the wagon will visit the shop for a third time tomorrow attempting to correct the malfunction. *tr
08/24/20084001
 Purchased new 535i 8/22/08. with less than 400 mile, received engine malfunction-power reduced warning while driving at interstate speed. limped to dealer, who had car for 4.5 days. 1st question: what type of fuel? shell. response: may have to much ethanol. service found an engine mis-fire code; replaced injector and swapped coils to validate inj. replacement. 2nd occurrence at 3200 miles, again at hi-way speeds. mis-fire code again found by dealer service. injectors were swapped; i'm not sure to what end. the car was also reprogrammed.i get the impression that service people do not know what is truly causing the problem. or else that they are trying not to commit. now have approx. 4100 miles w/o any recurrence. apparently this is an issue that is not just with the 5 series, but the 3 series also, both types with the n54 turbo charged 3 liter engine. first fixes involved the high pressure fuel pump, now they are appear to be swapping/replacing injectors and reprogramming the ecu. it is also a common point of discussion in on-line bmw forums when searched under engine malfunction. *tr