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Electrical systemPart report

2004 Toyota Tacoma Electrical system Problems

Complaints
17about this part
Share
4%of 415 total for the year
Median mileage
107,500miles
Trend
RisingComplaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.

NHTSA recorded 17 complaints about the electrical system of the 2004 Toyota Tacoma, 4% of the 415 complaints for this model year. Where a mileage was given, the median is 107,500 miles. 1 a fire, according to the filers.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“I was driving at a normal speed on the highway. The gas pedal became unresponsive. I had to push the pedal all the way to the floor in order to get up to speed. The check engine light came on and the transmission had trouble switching between gears. This problem occurred intermittently and continues to happen. The code that has come up is to replace the throttle body, which I have two separate times, but again the new replacement part is quoted at $1000.”

NHTSA complaint #10670243, filed 2015-01, 115,000 miles

“The vehicle was in motion at highway speeds when the truck instantly began decelerating even though I had the accelerator depressed. This problem resolved after turning the truck off and then on again. The problem recurred several times while stopped and while driving over the course of the next month. I was nearly rear ended as a result of this failure. Upon reading, and inspection by a mechanic I was notified that the throttle sensor had failed, and the entire throttle body needed to be replaced as a result. …”

NHTSA complaint #10838517, filed 2016-02, 90,000 miles

“Drivers side door handle fell off, while stationary. I grabbed handle to open door like normal, and part of it crumbled im my hand and then fell to the ground. It could not be put back on due to excessive corrosion. This is a huge safty risk of someone getting trapped in the vehicle if something happened and the handle fell off at the most importuned time, it could easily cause fatalities. While searching for a replacemet part I met several others with this same problem. The fact that Toyota is charging and exuberant about for the handle assembly's ($4251”

NHTSA complaint #11079044, filed 2018-03, 135,000 miles

“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. …”

NHTSA complaint #10301871, filed 2010-01, 22,500 miles

“From a dead stop to any speed, it felt like I no acceration. I would have to feather the gas pedal to get up to speed. I've replaced fuel filter, 02 sender ( front), maf sender ,fuel pressure regulator ,cleaned all grounds, had fuel pump tested , had head gasket checked ,changed spark plugs and wire's, cleaned throttle body and pressure cleaned fuel system. Every time I change a part or do any cleaning , the truck will run fine, for awhile , but the problem returns. I now have 150k on truck ,and I want to get 150 k more. I fell this is a extremely hazards situation. …”

NHTSA complaint #10723721, filed 2015-06, 120,000 miles

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
2026215%
202565%
20241610%
20231222%
202247%
2021911%
2020910%
20192110%
2018147%
2017229%
20163711%
201588%
201478%
20131310%
2012196%
20112212%
201083%
2009408%
2008276%
2007183%
2006253%
2005203%
2004174%
2003113%
200272%
200141%
200094%
1999114%
199852%
199711%
199694%
199521%

Other parts of the 2004 Toyota Tacoma

Body and structure
203 complaints
Suspension
85 complaints
Other or unknown
32 complaints
Vehicle speed control
30 complaints
Steering
29 complaints
Brakes
24 complaints
Fuel system
24 complaints
Transmission and drivetrain
22 complaints
Air bags
15 complaints
Tires
12 complaints
Engine
11 complaints
Wheels
11 complaints

← All problems reported for the 2004 Toyota Tacoma

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology