Bulletins
| Bulletin | Bulletin date | Replacement Bulletin | Item no. | Summary | Added |
|---|---|---|---|---|---|
| ELECTRICAL SYSTEM - WIRING | |||||
| 5269 | 11/21/2005 | 10018661 | Repair manual correction for the rear differential lock - electrical wiring diagram. 00400-ewd47-8u. '02 tacoma. *tt '03 tacoma. 00400-ewd51-7u. *tt '04 tacoma - 00400-ewd56-5u. *tt '01 tacoma. 0040-ewd44-0u. *tt '00 tacoma - | 01/10/2006 | |
Consumer Complaints
| Fail date | miles | occurences | Purchase date |
|---|---|---|---|
| ELECTRICAL SYSTEM | |||
| 11/12/2009 | 22500 | 1 | |
| I was driving my truck to a work location and stopped at a t-intersection to yield to the normal traffic flow. while stopped, the engine began to rev up for no apparent reason. i was not touching the accelerator pedal, but had my foot firmly on the brake. at first, i heard the engine noise but did not realize that it was my vehicle making the noise. then when i looked down at my instruments, i saw that my engine rpm's were above 1800 and staying steady. there was an audible clunk noise and the truck suddenly lurched forward (transmission engaging i would guess) and i pressed the brake with increased force to keep from rolling forward. then the engine rpm's returned to a normal idle just as suddenly. this occurred with a warm engine after several miles of normal driving. while the same exact thing has not occurred since this incident, i have had at least one other episode where the truck's engine rpm's increased for no reason while i was stopped at a red light. the latter occurrence was not as severe as the first incident and happened within the last month or so. i wanted to report this because my truck is a toyota brand and i have read about the recent recalls related to accelerator issues on some of the smaller toyota passenger cars, but never saw any mention of this involving their truck products. as an engineer myself, i strongly suspect that this phenomenon is due to an electrical and/or computer malfunction and not some sort of mechanical or physical interference issue. i say this because of my own experience when i know for a fact that there was nothing interfering with the accelerator pedal and it was not stuck mechanically. *tr | |||
| 04/18/2009 | 1 | ||
| Emergency flashers come on by themselves. unable to disengage switch and turn signals will not work. *tr | |||
| 10/22/2005 | 17000 | 4 | 09/30/2004 |
| Have a 2004, toyota tacoma, v6, 4x4. i was driving down the freeway and every now and then it is like i took my foot off the gas but i didn't! if i step on it, it is fine. *jb the problem: is throttle by wire throttle bodies on 03 and 04 tacomas. the accelerator petal position sensor assembly has a shaft onto which the lever for the accelerator cable is mounted with some return springs. this shaft also turns the potentiometer. this lever (a plastic piece) limits the travel of the assembly, so the highest and lowest resistances of the potentiometer are not encountered in the potentiometer. the problem is that the potentiometer can also turn in the assembly, loosing its reference to the arm and lever. then the range of resistance that is possible can be changed. if it turns too far one way, the higher resistance will be such that there is not sufficient voltage sent to the ecu to indicate that the pedal has been depressed. conversely, there is a point at the other end of the petitioner where the full voltage is applied and the ecu sees this as a failure and closes the throttle by releasing the throttle control motor's clutch. nothing has been to done to solve this issue with toyota or dealership. mechanic can not replicated problem. suggested i replace brand new throttle body which is about $600. *nm | |||
| 09/18/2005 | 35900 | 7 | |
| Alarm and electrical system on 2004 toyota tacoma double cab prerunner sr5 pickup. alarm system activated on its own at 5:30 am sep 18-05 and could not disengage it. loud electrical clicking noises emitted from under the dashboard around the ashtray that could be heard from over 100 feet away, even through walls inside a house (clicking/popping noise) lights flickering inside truck. left truck with toyota in savannah all day monday. (they had told me when i dropped it off that they would check the entire electrical system for shorts or faults.) when i picked it up i was told that there was nothing wrong with the truck, and nothing happened all day while it was there. when i went to get into the truck, and pushed the button to disengage the alarm and unlock the truck, the horn beeped 4 times (instead of the normal 2 times) so i went back in and told the service manager. he reassured me it was nothing to worry about, and said sometimes these things happen, and it doesn't matter whether the horn beeps twice, or 4 times, that again, there was nothing wrong with the vehicle. i drove the truck back home to charleston,sc and 30 minutes after i parked in the driveway, the alarm went off on it's own again, every 6 minutes the alarm went off on its own again so i needed to disconnect the positive battery cable again, it was making the loud clicking electrical short noises again. called toyota hq to see what would be done, as this vehicle is also under a major recall for the lower ball joints and they refused to replace them on several occasions, explained that i have tried repeatedly at several different toyota dealers and have been told their hands are tied unless i have the recall letter from hq in hand. afraid to drive this lemon as it is obviously unsafe with the front lower ball joint problem especially, and now with this possible major electrical fault, don't want the truck to catch fire and burn up. | |||
| 08/29/2005 | 10 | 10/16/2003 | |
| Throttle body related and re-occurring problem. where the accelerator position sensor mal-functions causing the vehicle to stall. toyota does not sell the sensor but does sell the entire throttle body at a cost of over $700. warranted vehicles with calif. emissions, goes for 5 years or 60k miles. but fed emission vehicles only have a 3 year 36k mile warranty although it is the same exact part number in question.*jb | |||
| 05/18/2005 | 1 | 07/27/2004 | |
| When exiting the vehicle, passengers are shocked when they touch the door to close it. the shock is more than what would be felt when touch the contacts on an electrical outlet. often leaving a shocked feeling in the fingers for aome time after exiting the vehicle. | |||
| ELECTRICAL SYSTEM - FUSES AND CIRCUIT BREAKERS | |||
| 01/26/2008 | 1 | 10/01/2004 | |
| While driving vehicle, experienced a burning smell coming from behind the dashboard. the stereo, clock, and auto alarm ceased working. took the vehicle to the dealership to diagnose the problem. the dealership stated that the dome fuse was the wrong size and replaced it with the correct size. fixed the problem, but now the stereo no longer works. the fuse in question was from the factory. *tr | |||
| ELECTRICAL SYSTEM - WIRING | |||
| 01/14/2005 | 1 | ||
| While driving vehicle inadvertently caught on fire. the cause of the fire was undetermined.*ak | |||
| 11/15/2004 | 2000 | 12 | 11/01/2004 |
| After running the vehicle and shutting it off for about 2 hours the vehicle did not want to start, there was only about 2,000 miles on the truck. the starter is cranking the engine, but the engine is not starting up. i took it to the toyota service department, and they said nothing was wrong with the vehicle. the same thing happend severl times after i had taken it to toyota. the only way to start the vehicle would be to crank it up for about 5 minutes, then the vehicle would run rough for about a minute. i took it to the toyota service department again and this time they worked on it. they said they had to change the throttle position sensor, the engine wiring harness, and the fuel injectors. no old parts were available. problem has still not been corrected. vehicle now has about 6,000 miles and every 3-4 days it still doesn't want to start up. *ak | |||