11 problems related to electrical system have been reported for the 2012 Toyota Tundra. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Toyota Tundra based on all problems reported for the 2012 Tundra.
Temperature seat switches are not working, fire hazard does to malfunctioning.
Computer software issues. Flex full engine.
Secondary air injection pump has high rate of failure, recalls in older models. Has caused truck to go into limp mode. Could cause serious accident/fatality if vehicle suddenly goes into limp mode on highway. This has happened on multiple occasions in forums I’ve read. Known problem by Toyota that isn’t being addressed.
My horn stopped working. I have two new drivers and this is a huge safety concern of mine. The dealer is telling me that this is a $800 job. Online I'm finding that this is a very common issue that is occurring . . . Effecting the safety or our vehicle.
Started my truck and the 4lo, check engine and trac off lights came on. The 4lo was blinking.
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. " he told me he used to work for Toyota and knew there was the extended repair on this issue but couldn't recall the specifics. I went into Toyota and unfortunately they will not cover it for my truck after they ran my VIN number. It seems like a lot of Tundras with the 5. 7l motor are covered but the 4. 6l motors are not. I was informed by Toyota that in the future it might be covered.
Tl- the contact owns a 2012 Toyota Tundra . The contact stated that while at a stop sign and when to go, the vehicle accelerates slowly. The stability traction control warning light illuminated off. The failure recurred on numerous occasions. The vehicle was taken to an independent mechanic where a diagnostic testing was completed that the air injection failed and needed to be replaced. The vehicle was not repaired due to the repair fees. The vehicle was not taken to a dealer. The manufacturer was notified of the failure and open a case # 1806292123. The approximate failure mileage was 77,023. Aw.
Code p0418 secondary air injector code keeps coming on - and is a known problem. 2011 Tundras were recalled for this - so should 2012 Tundras.
This truck has continued to have electrical problems because rats get in the engine and eat the wires. This issue always happens when the truck is parked. This time the rats only made a nest but the last time costs me about $1200.
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. If this is not corrected, the truck could go into limp mode, restricting power and depending on where this occurs, could lead to a dangerous situation. No way preventative maintenance will help identify this issue. I called Toyota customer service and they (Toyota) were willing to pay for half of my repairs, which I appreciate. However, they knew this was a problem dating back to 2000, made attempt to correct and still an issue. Seems like this should be investigated further based on the fact that this continues to plague owners.
Electrical buzzing noise from dash area when pressing gas pedal. Dealer says not a warranty item. After researching online many people experience same issue with several Toyota models.
| Electrical System problems | |
| Car Will Not Accelerate problems | |
| Horn Assembly problems | |
| Starter problems |