RoadVitals

2012 Toyota Tacoma Electrical Problems

Owner-reported complaints naming the electrical system, filed with NHTSA

Data refreshed

Electrical reportsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
19
Latest Jan 22, 2026
Share of all reportsThis category as a share of every owner report on file for this model year. One report can name more than one component, so the categories overlap.
6%
of 294 total
Crash or fire reportedReports in this category whose submitter recorded that a crash or a fire occurred. The reporter's own answer on the NHTSA form, not a verified finding.
1
Injuries or deaths reportedTotals the submitters entered on their own reports in this category. Not verified by NHTSA and not a casualty statistic.
0

What this page shows

Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories. Every record below is an owner-reported complaint about the 2012 Toyota Tacoma submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 19 reports on file name it.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Owner reports naming electrical

Shown in the owner’s own words, exactly as filed

Electrical
Filed Jan 22, 2026

Odometer Fraud. The contact purchased a 2012 Toyota Tacoma. It was discovered that there was a mileage discrepancy. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 51,350 and at the time of registration, it was discovered that the mileage was 212,400. The VIN was not available

NHTSA ID
11712767
Incident
Oct 4, 2025
Mileage
212,400 mi
Electrical
Filed Jan 27, 2021

HORN WILL NOT WORK WITH THE STEERING WHEEL CENTERED. IF YOU TURN THE STEERING WHEEL 90% TO THE LEFT OR RIGHT THE HORN HAS WORKED SOMETIMES. TOYOTA ISSUED A RECALL FOR THIS PROBLEM ON OTHER TACOMAS BUT NOT FOR THE 2012. THE TOYOTA DEALERSHIP IS SAYING THAT ITS MOST LIKELY THE CLOCK SPRING.

NHTSA ID
11390421
Incident
Jan 23, 2021
Electrical
Filed Jan 6, 2021

HORN WILL NOT WORK WITH THE STEERING WHEEL CENTERED. IF YOU TURN THE STEERING WHEEL TO THE LEFT OR RIGHT AND PUSHING THE HORN IT WILL WORK. TOYOTA ISSUED A RECALL FOR THIS PROBLEM ON 2005-2009 TACOMA BUT NOT FOR THE 2012. TOYOTA HAS KNOWN THAT THEY HAVE A PROBLEM WITH THE CLOCK SPRING THAT THEY WON'T ADDRESS ON THE 2012'S.

NHTSA ID
11386862
Incident
Jan 4, 2021
Mileage
97,000 mi
Electrical
Filed Nov 5, 2020

SUN VISOR , SPRING INSIDE VISOR BREAKS. MAKING THE VISOR HANG DOWN. WIRE HARNESS FROM AC BLOWER MOTOR, SO SOMEWHERE IN THE ENGINE COMPARTMENT OVERHEATS AND MELTS WIRING SO THE AIR CONDITIONING STOPS WORKING.

NHTSA ID
11373218
Incident
Jan 1, 2018
Mileage
80,000 mi
AirbagsElectrical
Filed Oct 3, 2020

TOYOTA HAS KNOW THAT THE CLOCK SPRING HAS BEEN FAILING FOR YEARS. THEY ISSUED A RECALL FOR MODEL YEARS 2005-2009. TRUCKS IN THE MODEL YEARS 2010-2012 ARE ALSO AFFECTED. PROBLEMS - LOSS OF HORN, LOSS OF AIRBAG. OPTIONAL IF EQUIPPED - LOSS OF CRUISE CONTROL AND/OR LOSS OF RADIO CONTROLS. THIS IS A MAJOR SAFETY HAZARD! LOSS OR HORN AND LOSS OF AIR BAGS ARE A VERY, VERY DANGEROUS SITUATION!!! THE CLOCK SPRING FAILS RANDOMLY SO YOU MIGHT NOT BE AWARE UNTIL IT IS TOO LATE!!!

NHTSA ID
11362524
Incident
Sep 21, 2020
Mileage
55,125 mi
Electrical
Filed Jun 10, 2019

DEFECTIVE CLOCK SPRING. OPEN CIRCUIT.

NHTSA ID
11218844
Incident
Jun 5, 2019
Mileage
105,000 mi
ElectricalEngine
Filed Jan 5, 2018

THE CHECK ENGINE LIGHT AND THE TRAC OFF LIGHT CAME ON AS I WAS MERGING ONTO THE INTERSTATE. I IMMEDIATELY STOPPED THE VEHICLE, PULLED OVER, AND TOOK MY 2012 TOYOTA TACOMA WITH 78,000 MILES TO THE MECHANIC WHERE I LEFT IT OVERNIGHT FOR THEM TO LOOK AT IT IN THE MORNING. RUNNING A DIAGNOSTIC THEY FOUND CODE P2443 - SECONDARY AIR INJECTION SWITCHING VALVE STUCK. I ASKED IF THEY HAD DEALT WITH THIS BEFORE AND THEY SAID THIS IS A COMMON PROBLEM FOR TOYOTA AND THEY HAVE DONE RECALLS ON BOTH THE TUNDRA AND SEQUOIA MODELS THAT HAVE HAD THESE ISSUES, BUT THE TACOMA HASN'T HAD A RECALL YET, EVEN THOUGH IT SEEMS TO BE JUST AS COMMON WITH THE SAME PARTS. THEY SAID THE COST OF PARTS AND LABOR WOULD BE AROUND $2,000. WHEN I ASKED THEM IF THE VEHICLE WAS SAFE TO DRIVE OFF THEIR LOT THEY SAID THESE CODES CAN CAUSE THE TACOMA TO GO INTO "LIMP MODE" WHERE YOU CAN LOOSE POWER, ACCELERATION, AND WON'T BE ABLE TO GO OVER 45MPH. I HATE TO THINK WHAT COULD HAVE HAPPENED IF I HAD KEPT MERGING ONTO THE INTERSTATE AND TRIED TO GET UP TO SPEED ONLY TO "LIMP" INTO TRAFFIC OR IF THIS HAD HAPPENED A MINUTE LATER ON THE INTERSTATE! EVERY THREAD I READ ONLINE FROM MULTIPLE SOURCES SHOW PEOPLE HAVING SIMILAR ISSUES FROM AS LOW AS 1,000 MILES ON THE TRUCK. THE ISSUES WITH THE SECONDARY AIR INJECTION PUMP AND SWITCHING VALVES SEEMS MOST COMMON BETWEEN 50,000-80,000 MILES, BUT EVENTUALLY DOES HAPPEN IN THE 2012-2015 TOCOMA MODELS.

NHTSA ID
11060748
Incident
Jan 3, 2018
Mileage
78,000 mi
ElectricalSteering
Filed Jul 29, 2017

HORN QUIT WORKING, ONLY WORKS WHEN THE WHEEL IS TURNED TO THE LEFT, FUSES ARE GOOD AND SO ARE THE RELAYS.

NHTSA ID
11011463
Incident
Jul 28, 2017
Mileage
62,000 mi
BrakesElectrical
Filed Jul 10, 2017

DRIVING AT HIGH WAY SPEED; THE ABS LIGHT, PARKING BRAKE LIGHT, TRACTION LIGHT, LOST POWER TO WINDOWS, A/C, RADIO, POWER STEERING, ENGINE WAS RUNNING ROUGH, THEN THE CHECK ENGINE LIGHT CAME ON. COULD BE A SAFETY ISSUE OF CONTROL OF VEHICLE FOR DRIVERS NOT PAYING ATTENTION. TOYOTA DEALER SAID THE ROOT CAUSE WAS A BAD CELL IN BATTERY THAT CAUSED THE IGN#2 FUSE TO BE BLOWN. THESE BATTERIES HAVE KNOWN ISSUES TO BE BAD FROM THE FACTORY. REPORTED EARLIER ABOUT 30000 MILES THE FACTORY BATTERY WOULD NOT START VEHICLE AND DEALER SAID THEY REPLACED BECAUSE OF A BAD CELL. I OWN A 2008 TOYOTA TACOMA ALSO , SAME MODEL AND MAKE AS BEING REPORTED AND THAT BATTERY HAS BEEN REPLACED 2 TIMES FOR SAME REASON.

NHTSA ID
11004155
Incident
Jul 10, 2017
Mileage
85,000 mi
Electrical
Filed May 16, 2017

MY 2012 TACOMA HAS A SPIRAL WIRE ISSUE THAT DEALER REFUSES TO FIX EVEN THOUGH THIS PART IS ASSOCIATED WITH THE TAKATA RECALL IN PREVIOUS YEAR MODELS WONDERING WHY THE RECALL STOPPED AT 2011 AND DOES NOT COVER THE ISSUE WITH MY TRUCK. CURRENTLY ONLY AFFECTIN THE USE OF MY HORN BUT AS SEEN IN PREVIOUS RECALLS COULD AFFECT MORE LTHINGS LATER ON.

NHTSA ID
10986103
Incident
Nov 1, 2016
Mileage
84,000 mi
Electrical
Filed Mar 3, 2017

HORN STOPPED WORKING A COUPLE OF YEARS AGO. MY RESEARCH SHOWED IT WAS SAME PROBLEM WITH 2010 TACOMA'S,AND THEY WERE RECALLED! READ THERE WAS A RECALL TO REPLACE A DEFECTIVE SPIRAL CABLE IN STEERING WHEEL. CALLED TOYOTA WAS TOLD TO TAKE TO DEALER, BUT WOULD HAVE TO PAY,AND MAYBE BE REIMBURSED. DON'T HAVE THE MONEY BEEN UNEMPLOYED FOR 4 YEARS.

NHTSA ID
10958435
Incident
Mar 12, 2014
ElectricalEngine
Filed Feb 16, 2017

SECONDARY AIR INJECTION VALVE STUCK OPEN CAUSING LIMP MODE. HAPPENED NEAR VERY DANGEROUS INTERSECTION AND LOST ALL POWER IN TRUCK. AS OTHERS HAVE STATED, TRUCK ONLY HAS 50K MILES AND REQUIRED A $500+ REPAIR (PART ONLY) FOR A COMPONENT OF THE EMISSION SYSTEM WHICH IS ONLY USED ON STARTUP AND INCLUDES A WARRANTY OF ONLY 2 YEARS.

NHTSA ID
10955055
Incident
Nov 28, 2016
Mileage
50,000 mi
ElectricalEngine
Filed Jan 16, 2017

ENGINE/ALL POWER IS LOST WHEN ENGINE HAS REACHED A CERTAIN RPM. CODE READER STATES "CRANKSHAFT POSITION SENSOR "A" CIRCUIT MALFUNCTION".

NHTSA ID
10945437
Incident
Nov 28, 2016
Mileage
31,000 mi
Electrical
Filed Dec 29, 2016

SECONDARY AIR INJECTION VALVE STUCK CODES P2440,P2442. TRUCK GOES INTO LIMP MODE AND YOU CAN ONLY GO A MAX OF 40 MPH.TOYOTA KNOWS ABOUT THESE ISSUES AND DOES NOTHING ABOUT IT

NHTSA ID
10938557
Incident
Dec 14, 2016
Mileage
53,000 mi
ElectricalEngine
Filed Dec 18, 2016

WHEN I WAS LEAVING WORK THE OTHER NIGHT MY 2012 TACOMA WENT INTO LIMP MODE AND PRESENTED THE CEL AND TRAC OFF LIGHTS ON THE DASH. AFTER REVIEWING THE MANY BLOGS ON THE SUBJECT AND TAKING THE VEHICLE TO THE MECHANICS, I HAVE FOUND OUT THAT THE SECONDARY AIR VALVE IS LIKELY STUCK IN THE OPEN POSITION. THE MECHANIC HAS QUOTED ME A PRICE OF $1,142 ($780 FOR THE PART) TO REPLACE THE WHOLE SYSTEM (VALVE NOT SOLD SEPARATELY). I UNDERSTAND THAT THIS IS A COMMON PROBLEM WITH TUNDRAS/SEQUOIAS AND 2012 TACOS. HOWEVER, ONLY THE TUNDRAS ARE UNDER ANY TYPE OF WARRANTY. I BOUGHT A TACOMA BECAUSE THE LAST TWO TOYOTA'S HAVE RUN 300K MILES + WITH REGULAR MAINTENANCE. THIS TYPE OF EXPENSIVE REPAIR DUE TO POOR ENGINEERING IS LUDICROUS AND SHOULD BE A WARRANTY ISSUE. I GUESS TOYOTA WANTS TO BE TERRIBLE LIKE EVERYONE ELSE. GREAT. *TR

NHTSA ID
10936109
Incident
Dec 13, 2016
Mileage
122,000 mi
ElectricalFuel system
Filed May 31, 2016

THE SECONDARY AIR INJECTION SYSTEMS SEEMS TO FAIL QUITE FREQUENTLY ON THESE 2012 TACOMAS WITH LITTLE TO NO HELP FROM TOYOTA TO TAKE CARE OF THIS ISSUE AS A RECALL. THESE ARE KNOWN TO FAIL RIGHT AFTER YOUR OUT OF WARRANTY AND TO CHARGE IT'S LOYAL CUSTOMERS OVER $1000 FOR A PART THAT SHOULD NOT FAIL OR A PART THAT SHOULD BE COVERED IS ABSURD. I HAVE BEEN A LOYAL TOYOTA CUSTOMER MY WHOLE LIFE BUT THE ISSUES OF THE TACOMA ARE MAKING ME RETHINK MY DECISIONS AS AN AUTOMOTIVE CONSUMER

NHTSA ID
10871717
Incident
May 31, 2016
Mileage
70,650 mi
ElectricalFuel system
Filed Nov 6, 2015

FUEL SYSTEM CAN BE HEARD HOURS AFTER THE TRUCK IS PARKED, FEW TIMES A WEEK AND SOMETIMES DAILY .AND RUNS 2 TO 15 MINUTES. CONTACTED DEALER AND SAYS IT NORMAL FOR FUEL EVAP TO DO A SYSTEM CHECK. ONGOING STARTED BEFORE 3000 MILES

NHTSA ID
10788758
Incident
Aug 1, 2012
Mileage
3,000 mi
Electrical
Filed May 26, 2015

DEALER HAS DETERMINED THAT RODENTS ARE THRU THE WIRING FOR THE KNOCK SENSOR. CEL & TRAC LIGHTS CAME ON. ENGINE WENT INTO LIMP MODE. HAS BEEN AT THE DEALER NOW FOR ONE WEEK. PROBABLY BE ANOTHER WEEK BEFORE I GET IT BACK.

NHTSA ID
10721365
Incident
May 12, 2015
Mileage
39,000 mi
AirbagsBody & structureElectrical
Filed Feb 18, 2015
Crash reported

DRIVING MY TOYOTA TACOMA, I WAS APPROACHING A STEEP DECLINE. I TAPPED ON THE BRAKES AND CONTINUED DRIVING AT APPROXIMATELY 27 MPH WHEN I DOWN SHIFTED TO ACCOMMODATE FOR THE SNOWY ROAD. AS I WAS DOWN SHIFTING THE TRUCK LOST CONTROL AND SLID SIDEWAYS CAUSING THE FRONT PASSENGER SIDE TO HIT A SNOW BANK. ONCE THE TRUCK STRUCK THE SNOW BANK IT FLIPPED OVER ON ITS DRIVER SIDE. THE SIDE AIR BAGS ON BOTH SIDES CAME OUT BUT DID NOT INFLATE. THE DRIVER SIDE BAGS WERE TORN. I FOUND EVIDENCE OF THIS WITH SHREDDED PIECES OF THE AIR BAG FOUND IN THE VEHICLE. ADDITIONALLY THE DRIVER SIDE FRONT AIR BAGS NEVER DEPLOYED..UPDATED 03-02/15 *BF.....UPDATED 03-11-15 *BF UPDATED 9/22/2017*CN

NHTSA ID
10684116
Incident
Feb 17, 2015
Mileage
51,000 mi

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.

Other components reported on this vehicle

Categories with enough reports to have a page of their own

Elsewhere on this vehicle

Data sources

Data on this page last refreshed .