Bulletins


BulletinBulletin dateReplacement BulletinItem no.SummaryAdded
SERVICE BRAKES, HYDRAULIC
0080411/30/20040080410011806Intermittent vsc activation after starting the engine and driving straight from a stop position. this condition is always accompanied by the instrument panel vsc light and audible warning buzzer turning on at the same time. *nm update.01/31/2005
0020403/10/200400204R10006562Rear disc brake groan noise. *tt a vin has been added to the production change information table. *tt05/05/2004
0040311/24/200310005249Diagnostic trouble code (dtc) c1234 - yaw rate sensor. *tt02/17/2004

Consumer Complaints


Fail datemilesoccurencesPurchase date
SERVICE BRAKES, ELECTRIC
02/12/2010900001
 Our 2004 toyota sienna experienced a malfunction related to the abs vsc computer control. the car would get up to about 6 miles an hour and then the vsc light and warning bell would come on. you could feel the brakes trying to lock up the vehicle and bring it to a stop. my wife was fixing to get onto the highway when this occurred. i found the technical service bulletin # 10011806 related to this event, the vehicle is currently at the toyota dealership and i am waiting to hear back from them. *tr
SERVICE BRAKES, HYDRAULIC
04/15/200998000
 The vsc has activated multiple times on my van for no apparent reason. while driving at any speed and usually in a turn, the vsc light will flash, the warning beep will beep, and the abs brakes will automatically be applied and the engine will quickly decelerate. i have almost been rear-ended several times because the van will suddenly decide to decelerate. i have no control over when this happens and no control of the van when it does!
03/04/2012109182
 Tl- the contact owns a 2004 toyota sienna. the contact stated that the door cables for both the driver and passenger sides failed without warning. the contact had to enter the vehicle through the front doors or rear hatch. the dealer stated that the cables to the doors would have to be replaced but it was not covered under warranty. the failure and the current mileages were 109,182. kmj
03/04/2012109182
 Tl- the contact owns a 2004 toyota sienna. the contact stated the cables stop working on both side doors. the contact has to get into the vehicle through the front doors or rear hatch. the dealer stated the cables to the doors would have to be replaced and it was not under warranty. the failure mileage and current mileages were 109,182.rl
03/14/201194900
 Tl*the contact owns a 2004 toyota sienna. while driving approximately 5 mph a slip control alarm began to sound and the rear brakes locked. during the failure a slip control light also began illuminating on the instrument panel. the vehicle was towed to an independent mechanic who stated that there was rust developing on a spindle near the front driver's side speed sensor. the front driver's side speed sensor was replaced and the rust was cleaned from the spindle. the failure continued to occur. the failure and current mileages were 94,900. the vin was unavailable.
03/04/201197145
 Tl-the contact owns a 2004 toyota sienna. upon starting the vehicle the contact was unable to get the vehicle out of park. after repeated attempts the contact was able to shift the vehicle out of park. upon shifting the vehicle out of park an anti lock brake light began illuminating on the dashboard. the vehicle was taken to an authorized dealer where a brake switch and the anti lock braking system were replaced. the failure and current mileages were 97,145. sm.
03/14/201194900
 Tl*the contact owns a 2004 toyota sienna. while driving approximately 5 mph a slip control alarm began to sound and the rear brakes locked. during the failure a slip control light also began illuminating on the instrument panel. the vehicle was towed to an independent mechanic who stated that there was rust developing on a spindle near the front driver's side speed sensor. the front driver's side speed sensor was replaced and the rust was cleaned from the spindle. the failure continued to occur. the failure and current mileages were 94,900. the vin was unavailable.
03/04/201197145
 Tl-the contact owns a 2004 toyota sienna. upon starting the vehicle the contact was unable to get the vehicle out of park. after repeated attempts the contact was able to shift the vehicle out of park. upon shifting the vehicle out of park an anti lock brake light began illuminating on the dashboard. the vehicle was taken to an authorized dealer where a brake switch and the anti lock braking system were replaced. the failure and current mileages were 97,145. sm.
03/14/201194900
 Tl-the contact owns a 2004 toyota sienna. while driving approximately 5 mph a slip control alarm began to sound and the rear brakes locked. during the failure a slip control light also began illuminating on the dashboard. the vehicle was stopped and towed to an independent repair shop where the contact was told there was rust developing on a spindle near the front driver's side speed sensor. the front driver's side speed sensor was replaced and the rust was cleaned from the spindle. the failure continues. the failure and current mileages were 94,900. the vin was unavailable. sm.
03/04/201197145
 Tl-the contact owns a 2004 toyota sienna. upon starting the vehicle the contact was unable to get the vehicle out of park. after repeated attempts the contact was able to shift the vehicle out of park. upon shifting the vehicle out of park an anti lock brake light began illuminating on the dashboard. the vehicle was taken to an authorized dealer where a brake switch and the anti lock braking system were replaced. the failure and current mileages were 97,145. sm.
09/28/201095721
 I owe a 2004 toyota sienna. within the last 30 days i had to replace my brake master cylinder at my local toyota dealership (over $1500) due to a brake fluid leak which caused brake fluid to accumlate into the booster and into the engine (and the brake light to illuminate). this is a very similar to the problem which caused toyota to issue the recall that was announced on october 20th with the toyota highlander model. i feel the recall should be extended to the sienna model. i contacted toyota, and they will not offer any reimbursement or relief for me.
02/10/200768734
 Tl*-the contact owns a 2004 toyota sienna. while the contact was driving approximately 35 mph the brakes began to engage without pressure applied to the brake pedal. there was an illumination of the anti-lock brake system warning light. the failure was a first time occurrence. the vehicle was taken to the dealer for service repair. the technician replaced the steering angle sensor. the failure mileage was 68,734. the current mileage was 160,000.
04/01/2009890001
 2004 toyota sienna xle ltd. there were times when the gas pedal would get stuck at 60 mph or when i was turning on a long freeway on ramp going about 30-35, the van would accelerate when i did not want it to. *tr
10/16/2009486491
 1. events leading to the failure: my wife was traveling north on peebles rd in allison park, pa in our 2004 toyota, sienna. after my wife proceeded through the intersection with duncan avenue the driver of the vehicle in front of my wife suddenly stopped short and that person's brake lights did not come on. when my wife realized the situation she hit her brakes hard and the pedal went quickly to the floor providing no braking and resulting in my wife?s vehicle to hit the vehicle in front of her. while all vehicles were traveling well within the speed limit the damage was extensive as the vehicle in front of my wife was a ford explorer. 2. the failure, frequency, and consequences: i have tried to replicate this failure and can readily recreate it. in a safe environment i have tried to suddenly and dramatically hit the brakes and the pedal quickly goes right to the floor. some fairly limited braking does occur during these attempted re-creations but it seems to be too little and delayed. my wife's vehicle was significantly damaged requiring $7,083.61 in total repair cost (documentation is available). 3. while the crash was the first time for such a dramatic failure, our concerns of the softness of the braking system had been previously reported to a local toyota dealer and their response was that is how those brakes are. so nothing has really been done to correct the failure and i believe all the parts in the braking system currently are original to the vehicle. *tr
11/01/2009107000
 I was driving 2004 toyota sienna xle awd, 109,000, with bridgestone rft snow tires. at 15-20 mph on dry pavement, i tried to stop quickly for a dog strolling in front of us. the van slightly slowed, the dog waddled out of the way and we came to a rolling, gradual stop with the brake pedal depressed fully to the floor. i hadn't time to pump brakes and i don't know if it would have mattered. the toyota dealer couldn't duplicate problem and said pads, etc; were good. has happened to me this one time only, but google search suggests others may have had this experience. thanks
03/13/2009410001
 When backing 2004 toyota sienna le van in driveway the brakes failed. the vehicle has 41,000 miles and has always been serviced by toyota. the brakes were checked at 34,388. the car has a higher idle (fuel consumption) so in the process of backing, the car was rolling. i put the car in reverse and did not touch the acelerator. the vehicle rolled and continued to pick up speed, since i was unable to stop the car. the brakes were applied around 3 times and then i opted to hit the retaining wall instead of going back into the a busy street with wife and children in the car. it was either pray for no coming traffic or run into the neighbors house and vehicles. we have not experienced any problems in the past. the dealership was unable to identify any root cause. we are concerned about the safety of the vehicle and wanted a complaint as a matter of record. in researching the incident in google this is not an isolated incident and there have been a few records of such cases with the sienna van around this make and model. *tr
09/01/2008340001
 The car is used on an occasional basis. 34,000 miles in four years. it has suffered corrosion buildup on the rotors, so we have tried to use it at least twice a week, knowing that catastrophe can occur when the vehicle is not used with some regularity--especially in the cold weather. about two months ago, my wife complained of noise, and i told her it was due to corrosion buildup and that driving would remove the corrosion. then she abandoned the car a couple of days later when the brakes failed. the inner pad had work down to metal, and the metal backing slid out of place. my wife wound up braking on the caliper piston. i will replace the brake shoes and rotors, and must also replace a caliper if i cannot find the piston as a separate piece. estimate: $300, not counting the caliper, with me doing all the work. toyota would likely charge a little more than $1,000 for the job. the car has sat unused and unrepaired now for weeks for want of the cash for the parts. *tr
09/06/200855000
 Tl*the contact owns a 2004 toyota sienna. while driving 40 mph, the contact depressed the brake pedal, but the vehicle did not stop. there were 30-40 yards between the contact's vehicle and the preceding vehicle. the brake pedal extended to the floorboard. the brakes grabbed momentarily, but then became mushy. the contact crashed into the preceding vehicle and caused injuries to the occupant in the other vehicle. the passenger's seat belt did not engage properly, causing the passenger to strike the dashboard and sustain minor injuries. a police report was filed. the vehicle was destroyed and towed from the scene. the failure and current mileages were less than 55,000.
09/06/2008500001
 Driving our '04 sienna at about 30-40 mph in flow with traffic with about 30-40 yards of separation had to brake for suddenly stopping traffic in front when brake pedal went to the floor with shocking mushiness failing to stop in time resulting in totaling of our vehicle and significant damage to vehicle we struck. *tr
03/06/200773200103/06/2007
 Tl* the contact owns a 2004 toyota sienna le. after purchasing the vehicle, the contact noticed that the brakes were making a squeaking sound and when engaged they did not stop the vehicle as quickly as they should have. the brakes were repaired. the failure and current mileage were 73200.
12/26/2006250001005/29/2006
 Vehicle hesitates when accelerator is pressed. vehicle 'surges' at times when brake is depressed. similar to other complaints noted in this section, my sienna has a rough transmission, tires occasionally spin out with normal acceleration from a parking lot, toll booth, etc. repeated trips to dealership bring no satisfaction: response from dealer is that vehicle is operating within standards. *nm
11/21/20064000024
 Dt*: the contact stated while driving 40 mph or at various high speeds on normal braking conditions, the automatic braking engaged intermittently and the wheels locked up. the vehicle was taken to a local dealer who upon examination determined that the steering angle sensor failed. the dealer also stated that there was a nhtsa service bulletin # 10011806 regarding the service brakes, hydraulic. the vehicle was taken to the dealer for further repairs.
12/28/2005106/17/2004
 Brake pads worn down to damage rotors with no warning at 30k miles. new pads and rotor and still hear noise from right front. black brake dust on outside hub caps started appearing at 3k miles, mechanics said it's normal. mechanic hears noise but maintains it is not indicative of a problem. two tires already replaced due to wear. tire sensors worked sometimes for flats. *nm
09/01/20052198614
 2004 toyota sienna developed problems with the brake equipment.***no answer required*** *mr on four occasions, the brakes had been inspected by mechanics and in some cases reinstalled. the consumer also experienced a grinding noise on two different trips. the consumer was informed that the grinding noise was coming from the rear brakes and did not constitute serious brake problems. the consumer tried to use the hitch mount/bike rack only to find that the hitch would bottom out while entering gas stations or exiting driveways. also, as an alternative to the hitch not operating properly, the consumer added rear air bags on the suspension system in order to give the vehicle additional clearance and they have failed and or blew out about three times. other problems: battery failure, rear bumper clip not holding the bumper in place, interior trim piece on seat detaching, grab handle trim piece breaking, and the consumer's daughter's hand had gotten stuck in the automatic door that was not supposed to close due to resistance in the path. *sc
04/01/200410000107/01/2003
 Brake problem s after only eight months and 10k miles of normal use. (nar) *ph *cb
05/23/2004105/27/2003
 The mechanic determined that the brakes needed to be replaced due to worn out parts. *ak the consumer was informed that the brakes had 2% of life left and the drums had to be machined. the vehicle never gave any warning that the brakes were bad. *sc *jb
08/13/20034000105/10/2003
 The brakes on my 2004 toyota sienna constantly makes a squeaking noise when braking. we noticed this 3 months after our purchase. noise is heard by passengers in the 3rd row or when radio is off. the dealer has been unable to fix problem. *jb
SERVICE BRAKES, HYDRAULIC - ANTILOCK
07/30/2007250002006/08/2004
 Our family is deeply troubled and worried about the safeness of our 2004 toyota sienna le-8 every time we use it on the road. our van has been having intermittent vsc, kicking which started early this year. first, it will hesitate to accelerate followed by vsc kicking then automatic braking engages then sudden pull of the steering to the left. the vsc keeps flashing and beeps continuously unless i slow down to around 20mph. i even showed the dealer copies of sienna owners complaints with similar problem and tsbs regarding yaw rate sensor and steering column sensor. but still could not fix or duplicate the problem. nothing was done to correct the problem and no parts replaced or repaired. *tr
03/07/200730600106/21/2004
 Tl*- the contact stated that while driving the 2004 toyota sienna (with 30600 failure mileage at 30 mph the contact's vehicle struck a second vehicle , t-boned, on the passenger's side, pushing the other vehicle out of the way and continuing down the street. the vehicle picked up speed going down a hill. the contact applied the brakes and tried to down shift, but nothing seemed to decrease the velocity. the vehicle hit a street sign, jumped a curve ,and the contact purposely crashed into a clump of guide wires in order to stop the vehicle. the contact pushed on the emergency brake and it did not engage. the contact noticed after the crash that the vehicle had lost power. the vehicle sustained extensive damage. *ak
04/01/200642056108/08/2003
 Dt*: the contact stated intermittently while applying brake pressure, the pedal will go to the floor. in addition, the vehicle accelerated without warning causing an accident. one person sustained minor injuries and there was a crash and property damage. the vehicle was taken to the dealer where the problem could not be duplicated and the contact was informed that the vehicle is functioning normally.
12/16/20047500102/28/2004
 Wife was in school parking lot attempting to park, traveling less than 10 mph, applied brakes, and brake pedal went to floor/with no brake action. vehicle hopped a curb and struck wrought iron fence. consumer placed vehicle in reverse and got it off curb, then into park. visible damage to front bumper & license plate, possible damage to undercarriage. iron fence was twisted/ bent and disconnected from gated entrance. contacted dealership and tow truck was dispatched. tow truck driver scottfrom la costa towing noted that the brake pedal was soft, and went to the floor when he started the vehicle. traveled to dealership in second car, assistant service manager steve adams commented that because we alleged a manufacturing defect vehicle should not have been towed to their location because it might be an admission of liability. vehicle was retained at toyota carlsbad lot . consumer was advised to contact toyota customer service tomorrow morning to schedule an engineer to examine the vehicle and determine whether or not there was a manufacturing defect. to date, no work had been done on the vehicle. consumer did not know exactly what caused the failure or what was necessary to correct it. consumer purchased the vehicle new in february 2004, and it had aproximately 7500 miles.*ak
11/15/20043000109/20/2004
 My wife was attempting to backup up when she put the van in reverse it did not move. she took her foot of the gas the van started rolling backwards. when she applied the brakes the pedal went to the floor and would not stop. she then rolled backwards down a 75-80 degree bank for about 75-100 yards. along she was kept pumping the brakes but they continued to failed. at the end of her trip the van slammed backwards into a tree, causing injury, and big damage to the van. this really did happen ! after all this is to strange to be madeup. *ak
11/15/20043000109/20/2004
 My wife was trying to backup, when she put the van in gear and pushed the gas, nothing happened. she let her foot of the gas and the 2005 van starting rolling. she then applied the brakes, but they did not work, the brakes went completely to the floor. she then rolled down a very steep backwards and hit a tree, this is a big problem< toyoda better do something befroe someone dies. but my guess is that someone already has.*ak
07/12/200434001
 Vehicle experienced brake failure when depressed at 15 mph. consumer's vehicle stopped when it rear ended another vehicle. dealership performed a diagnostic test in which no failure was detected.*ak
02/27/2004501
 While driving ay any speed and applying the brakes consumer heard a noise, it sounded like it was coming through the gas tank. dealer indicated nothing was wrong with the vehicle. *ak
02/10/200420000103/01/2003
 While pulling out of the parking lot attempting to accelerate, a severe vibration and or pounding occurred in the front end. it was determined that the computer actuation of the pulsating brakes to counteract false perception of skidding. (the driver did not apply the brake pedal during the event) *ak *sc
SERVICE BRAKES, HYDRAULIC - ANTILOCK - CONTROL UNIT/MODULE
07/12/20043400106/01/2004
 My wife was in an accident whild driving our new, 2004 (3400 miles) toyota sienna. we beleive that the cause of the accident was antilock brake failure.*ak the car was traveling at 15 miles per hour. she went from accellerator to brakes and the brakes never applied. she slammed into the car that was in front of her. we have tried repeatidly to contact toyota but they have never called us. the dealer is not providing us any assistance and are dismissing our assertions as rediculous. please help us.
SERVICE BRAKES, HYDRAULIC - FOUNDATION COMPONENTS - DISC - PADS
07/09/20072
 2004 sienna, had to replace brake pads twice. brought vehicle in for 30,000 mile check, and was told that they were again 75% worn out and need to be replaced for the third time. also, had to replace all four tires at 18,000 miles. *ak
08/10/2005105/22/2004
 Upon having the 15,000 mile maintenance done i was informed that my brake disc pads needed to replaced as they were down to 20%. *jb
03/17/200423000107/10/2003
 I am having the brakes on my new toyota sienna replaced and the rotors resurfaced at 24,000 miles this seems quite early to me. the consequence is the price to do this is $195 or i could get the new type of brake pad but that cost $235 (they also didn't have it in stock). i have read other complaints of persons getting their done as early as 10,000 miles. this is not right!*ak
10/20/200415000110/28/2003
 The brakes pads on my 2004 sienna had to be replaced at 15,000 miles. was told by the service advisor he has seen siennas coming in at 10,000 miles for brake jobs. a toyota technician told me the reason for this was because toyota was using softer pads so the brakes can be quiterer. this is a very expensive job for something that should last into the 30,000 mi. range. this is very dissapointing coming from toyota.*ak
09/01/200414000107/01/2003
 Brake degradation on 2004 toyota sienna. toyota sienna brakes began to severly deteriorate at 14,000 miles. pads worn beyond safe use and rotors glazed and warped. *ak
SERVICE BRAKES, HYDRAULIC - FOUNDATION COMPONENTS - DISC - ROTOR
06/25/200762309/15/2004
 I own a 2004 toyota sienna i bought new that has had to have the brake pads replaced 3 times in 62,000 miles. the last 2 sets only lasted 17,000, but the factory ones lasted 27,000. it' was worn out rotors, and had to replace those twice. it wa sbecoming very expensive, and seemed to be a product default. no other mini van i drove had anything like this. *ak
06/08/20061
 2004 toyota sienna, left outside in long term parking for three weeks, during that time it rained a lot. upon return and backing out of parking spot, a popping sound was heard. since then every time the brake is depressed a thumping noise can be heard from the tire. inspection of the tire didn't reveal anything stuck in them that would cause the noise. after bringing it to the dealer for servicing, the technician explained that rust build on the rotor actually fused to the brake pad thus causing the popping noise. the thumping noise when the brake is applied is caused by the brake pad rubbing against the rust on the rotor. toyota motor corp. has refused and so has the dealer to replace the rotor since they say it is a wear and tear item and has exceeded the warranty period so i will have to come up with the money to replace them. there should not be that much rust on any part of an 04 sienna that it would fuse to another part of the vehicle. this is a defect and should be handled by the manufacturer. *jb
09/01/200414000107/01/2003
 Brake degradation on 2004 toyota sienna. toyota sienna brakes began to severly deteriorate at 14,000 miles. pads worn beyond safe use and rotors glazed and warped. *ak
SERVICE BRAKES, HYDRAULIC - PEDALS AND LINKAGES
01/28/2004301
 Distances between the gas and brake pedals were designed poorly. the pedal pad was 2x4 inches. when transferring feet from one pedal to another consumer's foot would get stuck between the pedals. *ak