2012 Toyota Tundra Electrical system Problems
- Complaints
- 19about this part
- Share
- 12%of 156 total for the year
- Median mileage
- 93,000miles
- Trend
- FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
NHTSA recorded 19 complaints about the electrical system of the 2012 Toyota Tundra, 12% of the 156 complaints for this model year. Where a mileage was given, the median is 93,000 miles.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“On 4/5/16, I started my 2012 Tundra to go to work. Engine light comes and stays on. Called local dealer and took the truck in. 5 hours of diagnostic testing reveals code p0418 (secondary air intake system) issue on my 2012 Tundra. Cost of repairs, $2048.00. After some research into this code p0418, I find that it is a reoccurring problem for tundras, tacomas and sequoias dating back to 2000 - 2010. Repair costs of up to $4,000. Supposed to be resolved in 2011 + models. Not so. …”
NHTSA complaint #10854010, filed 2016-04, 87,992 miles“2012 Tundra 4.6 v8 my truck will go into limp mode and the 4lo light flashes, check engine, and trac off lights were all on. Almost complete lose of power will happen. In traffic I end up blocking ever vehicle behind me, because the truck will not reach the speed limit. If there is a hill then the truck barely moves going up the hill. After looking online I saw it's a pretty common problem on Toyota with the secondary air injection pump seizing. I checked it with the code reader at a local shop and the guy confirmed it, code p2240 air injection switching valve stuck open bank 1. …”
NHTSA complaint #11319365, filed 2020-03, 96,000 miles“Odometer Fraud. The contact purchased a 2012 Toyota Tundra. It was discovered that there was a mileage discrepancy. The vehicle was a private sale. At the time of purchase, the mileage was 128,907. The contact discovered after the dealer provided a Carfax report that the mileage was 381,746. The contact reported the odometer fraud to the Benbrook Police Department.”
NHTSA complaint #11767974, filed 2026-09, 381,746 miles“Odometer Fraud. The contact purchased a 2012 Toyota Tundra. The contact stated while attempting to register the vehicle, it was discovered that there was a mileage discrepancy. The vehicle was a private dealer sale. At the time of purchase, the vehicle mileage was 161,000 and at the time of registration, it was discovered that the mileage was 260,000.”
NHTSA complaint #11657369, filed 2025-04, 260,000 miles“Odometer Fraud. The contact purchased a 2012 Toyota Tundra. The contact discovered that there was a mileage discrepancy after the purchase. The vehicle was a dealer sale. At the time of purchase, the vehicle mileage was 149,000. It was later discovered upon checking the vehicle history that the mileage was 378,000.”
NHTSA complaint #11758046, filed 2026-08, 378,000 milesRelated service bulletins
- 10238157May 30, 2023TSB: The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master keys are lost. Once the system is reset, all previously registered…
- 10182983Oct 12, 2020TT: Some customers may encounter Bluetooth® connectivity concerns such as: ?Difficulty to pair the phone. ?Intermittent Bluetooth® failure to connect to the vehicle when first…
- 10164330Jul 1, 2019TSB: REVISION NOTICE July 01, 2019 Rev2: ? Applicability has been updated to 2019 ? 2020 model year Toyota vehicles. ? The Techstream Preparation and Process Overview sections…
- 10155247Feb 28, 2019TT: Some customers may encounter Bluetooth® connectivity concerns such as: ? Difficulty to pair the phone. ? Intermittent Bluetooth® failure to connect to the vehicle when first…
- 10133654Nov 22, 2017TSB: REVISION NOTICE November 22, 2017 Rev1: ? Applicability has been updated to include 2014 ? 2018 model year vehicles. Any previous printed versions of this bulletin should be…
- 10152205Jan 6, 2017TSB: SUPERSESSION NOTICE The information contained in this bulletin supersedes SB No. T-SB-0101-11. Applicability has been updated to include 2016 ? 2017 model year vehicles…
- 10132930Nov 29, 2016TSB: OBSOLETE NOTICE: September 14, 2016: This bulletin is now obsolete. Please see T-SB-0134-16.
- 10132642Oct 3, 2016TT: Some customers may experience Bluetooth disconnections or loss of SMS text message functionality on the navigation/audio system with Android phones running OS 4.4 or later…
- 10150418Sep 14, 2016TSB: Supersession Notice. Flash reprogramming allows the ECU software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are…
- 10134117Jun 1, 2016Dealer Letter: LSC Expired on May 31, 2016.
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 1 | 3% |
| 2025 | 13 | 9% |
| 2024 | 37 | 11% |
| 2023 | 41 | 10% |
| 2022 | 29 | 7% |
| 2021 | 4 | 17% |
| 2020 | 4 | 9% |
| 2019 | 13 | 18% |
| 2018 | 26 | 26% |
| 2017 | 27 | 35% |
| 2016 | 26 | 22% |
| 2015 | 8 | 16% |
| 2014 | 19 | 20% |
| 2013 | 11 | 13% |
| 2012 | 19 | 12% |
| 2011 | 21 | 16% |
| 2010 | 16 | 10% |
| 2009 | 4 | 11% |
| 2008 | 38 | 12% |
| 2007 | 24 | 6% |
| 2006 | 16 | 3% |
| 2005 | 17 | 5% |
| 2004 | 13 | 3% |
| 2003 | 6 | 2% |
| 2002 | 9 | 2% |
| 2001 | 3 | 1% |
| 2000 | 11 | 1% |
Other parts of the 2012 Toyota Tundra
57 complaintsFuel system
27 complaintsTransmission and drivetrain
21 complaintsOther or unknown
17 complaintsSteering
12 complaintsBody and structure
11 complaintsAir bags
9 complaintsBrakes
7 complaintsElectronic stability control
7 complaintsVehicle speed control
7 complaintsWheels
6 complaintsSeats
4 complaints
← All problems reported for the 2012 Toyota Tundra
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