RoadVitals

2007 Toyota 4Runner 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.
13
Latest Jul 1, 2025
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.
8%
of 154 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.
2
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 2007 Toyota 4Runner submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 13 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 Jul 1, 2025

Odometer Fraud. The contact purchased a 2007 Toyota 4Runner. The contact stated that while attempting to register the vehicle, it was discovered that there was a mileage discrepancy. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 87,750, and at the time of registration, it was discovered that the mileage was 200,000.

NHTSA ID
11670552
Incident
Jun 25, 2025
Mileage
200,000 mi
ElectricalVisibility
Filed Dec 27, 2024

Driving along the freeway in winter conditions I used the rear defroster for the back window, this caused the back glass to explode loudly, shattering glass onto belongings, animals and the road behind us. This caused drivers behind us to act evasively and myself as well making a winter driving condition more dangerous, not to mention the spray of glass that reached the back seats of my car with passengers. This has been well documented by other drivers and been acknowledged by Toyota in letters and technician bulletins for replacement of the windows, there are no warning lamps, it just goes from working correctly to exploding.

NHTSA ID
11632738
Incident
Dec 26, 2024
Electrical
Filed Jul 6, 2023

The contact owns 2007 Toyota 4Runner. The contact stated that on several occasions while driving at various speeds, while the vehicle was parked or idling, the electrical system malfunctioned. The contact stated that while the brake pedal was depressed, brake lights intermittently illuminated or failed to illuminate as needed, the horn failed to operate, and other undisclosed electrical systems intermittently failed to operate as designed. The vehicle was taken to the dealer where it was diagnosed that an unknown ICMU failed and needed to be replaced. The vehicle was taken to an independent mechanic but was not yet repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 127,000.

NHTSA ID
11530680
Incident
Jul 2, 2023
Mileage
127,000 mi
BrakesElectrical
Filed Apr 25, 2019

TL* THE CONTACT OWNS A 2007 TOYOTA 4RUNNER. AFTER STARTING THE VEHICLE, A HIGH PITCHED AUDIBLE ALARM SOUNDED AND THE ABS, TRACTION CONTROL, AND EMERGENCY BRAKE SENSORS REMAINED ILLUMINATED. ALSO, WHEN DEPRESSING THE BRAKE PEDAL TO STOP THE VEHICLE, THE BRAKES MALFUNCTIONED AND THE PEDAL TRAVELED TO THE FLOORBOARD. THE VEHICLE WAS TOWED TO JIM HUDSON TOYOTA (970 COLUMBIANA DR, IRMO,SC) , BUT THE CAUSE OF THE FAILURE COULD NOT BE DETERMINED. THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS 111,000.

NHTSA ID
11203657
Incident
Apr 24, 2019
Mileage
111,000 mi
Body & structureElectricalVisibility
Filed Feb 13, 2019

MY REAR WINDOW SHATTERED AFTER USING THE DEFROSTER. ONCE I GOT OUT OF MY CAR AFTER PARKING IT IN MY JOB'S GARAGE IT BUSTED ON IT'S OWN. I FOUND OUT THAT THIS HAS HAPPENED TO MANY 4TH GENERATION 4RUNNER OWNERS BUT TOYOTA WON'T RECALL OR EXTEND THE WARRANTY FOR THIS ISSUE ANY LONGER. NOW I HAVE TO EITHER NEVER USE MY REAR DEFROSTER AGAIN WHILE LIVING IN COLORADO OR RISK IT SHATTERING AGAIN AND HURTING PASSENGERS IN MY CAR. I WOULD HAVE NEVER BOUGHT THE VEHICLE IF I HAD KNOWLEDGE OF SUCH A DANGEROUS ISSUE.

NHTSA ID
11176664
Incident
Feb 11, 2019
Mileage
138,000 mi
ElectricalVisibility
Filed Jan 25, 2019
Fire reported

TL* THE CONTACT OWNS A 2007 TOYOTA 4RUNNER. WHEN THE REAR DEFROSTER WAS ACTIVATED, THE REAR WINDOW FRACTURED. THE VEHICLE WAS TAKEN TO HAMER TOYOTA (11041 SEPULVEDA BLVD, MISSION HILLS, CA 91345, 818-365-9621) WHERE BURNT WIRES WERE FOUND. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 216,800.

NHTSA ID
11172187
Incident
Jan 16, 2019
Mileage
216,800 mi
Electrical
Filed Jan 2, 2019

I WAS DRIVING ON DEC. 24TH, 2018, TURNED ON MY REAR DEFROSTER ON, AND WITHIN MINUTES MY REAR WINDOW EXPLODED. THE COMPANY, SAFELITE, TOLD ME THAT THE DEFROSTER LOOKED LIKE IT SHORTED OUT AND CAUSED THE DAMAGE. ATTACHED IS A PICTURE OF THE DEFROSTER WIRES.

NHTSA ID
11164553
Incident
Dec 24, 2018
Mileage
160,000 mi
Electrical
Filed Dec 23, 2016

TL* THE CONTACT OWNS A 2007 TOYOTA 4RUNNER. THE CONTACT STATED THAT THE WIRING HARNESS HAD TO BE REPLACED DUE TO RODENTS EATING THE INSULATION ON THE WIRES. THE VEHICLE WAS TAKEN TO A DEALER WHERE IT WAS DIAGNOSED THAT THE INSULATION ON THE WIRES WERE MADE OF RICE HULLS AND ATTRACTED RODENTS. THE WIRES NEEDED TO BE REPLACED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE THE FAILURE MILEAGE WAS 50,000. THE VIN WAS NOT AVAILABLE. UPDATED 02/09/17*LJ

NHTSA ID
10937246
Incident
Sep 15, 2016
Mileage
50,000 mi
Electrical
Filed Sep 16, 2013

THE REAR HATCH DOOR HANDLE IS DEFORMED AND TURNED INTO A TAR-LIKE MESS THAT COVERS OUR FINGERS WHENEVER WE TRY TO OPEN THE REAR HATCH. I HAVE NOTED NUMEROUS OTHER 4-RUNNER OWNERS HAVING THE SAME EXACT MALFUNCTION. PROBLEM IS THE MELTED RUBBER COVER WHICH IS PART OF THE SWITCH ASSEMBLY, PART #84840-35010. TOTALLY UNSAT! *TR

NHTSA ID
10543771
Incident
Sep 27, 2012
Mileage
36,500 mi
Electrical
Filed Aug 22, 2013
Fire reported

VEHICLE WAS PARKED ON SHOULDER OF ROAD, ENGINE RUNNING, WHILST ADJUSTING THE MOBILE GPS (HENCE THE REASON FOR STOPPING). AT FIRST SMOKE WAS COMING UP AROUND/THROUGH CENTER CONSOLE (BETWEEN DRIVER'S SEAT AND PASSENGER FRONT SEAT) AND THEN FLAMES. THE INTERIOR OF PASSENGER COMPARTMENT WAS TOTALLY BURNED OUT IN SPITE OF PROMPT RESPONSE BY EMERGENCY CREW. STATE FARM INSURANCE HAS NATURALLY BEEN NOTIFIED ALTHOUGH I HARDLY SEE WHY STATE FARM SHOULD PAY AND NOT TOYOTA. SURELY THERE MUST HAVE BEEN SOMETHING WRONG WITH ELECTRICAL WIRING.

NHTSA ID
10536655
Incident
Aug 18, 2013
Mileage
85,000 mi
Body & structureElectrical
Filed Jul 15, 2013

THE REAR HATCH DOOR HANDLE TURNED INTO A MELTED RUBBER/PLASTIC MESS. OUR HANDS ARE COVERED WITH BLACK MELTED RUBBER TYPE MATERIAL WHENEVER WE TRY TO OPEN THE REAR HATCH. AFTER ONLINE RESEARCH, I SEE THERE ARE ALLOT OF OTHER TOYOTA 4 RUNNERS WITH THE SAME PROBLEM. THE PART IS CALLED, SWITCH ASSEMBLY, BACK PART #84840-35010. NO DOUBT THAT THE PART IS FAULTY. *TR

NHTSA ID
10524995
Incident
Apr 2, 2013
Mileage
35,000 mi
ElectricalVisibility
Filed Feb 10, 2011

MY VEHICLE, 2007 TOYOTA 4RUNNER, HAS BEEN EXPERIENCING SOME ISSUES WHEN THE TEMPERATURE DROPS BELOW FREEZING. LIVING IN MAINE, THIS HAPPENS MORE OFTEN THAN ANY HUMAN WOULD LIKE. IN ANY EVENT, MY HVAC BLOWER MOTOR CONTINUES TO LITERALLY FREEZE UP AND WILL NOT WORK. TOYOTA HAS ISSUED A TSB (AC002-07) ON THIS EXACT ISSUE. SINCE MY VEHICLE IS OUT OF WARRANTY I'M TOLD BY THE LOCAL DEALER AND BY TOYOTA DIRECTLY THAT I NEED TO ASSUME ALL COSTS FOR REPAIR, YET IF THE VEHICLE WAS "IN WARRANTY" THESE REPAIRS WOULD BE COVERED. THE VEHICLE WAS DRIVEN IN WARM CLIMATES FOR THE DURATION OF THE WARRANTY PERIOD AND THIS ISSUE WAS NOT DISCOVERED UNTIL A RECENT MOVE. I'M UNCLEAR HOW THIS ISSUE IS NOT SEEN AS A DIRECT SAFETY ISSUE AND HAS NOT BECOME A STANDARD VEHICLE RECALL FOR REPAIR. THIS IS AN OBVIOUS DESIGN FLAW WITH THE VEHICLE WHICH CAN IMPAIR THE VEHICLE'S ABILITY TO PERFORM SAFELY. I HAVE NOT DRIVEN MY VEHICLE IN OVER A WEEK DUE TO THE FACT THAT IT IS UNSAFE TO DRIVE IN A FREEZING COLD VEHICLE, BUT MORE IMPORTANTLY, I CANNOT GET AIR MOVEMENT TO DEFROST MY WINDSHIELD. WITH NO HEAT, OR THE ABILITY TO DEFROST YOUR WINDSHIELD IN INCLEMENT WEATHER THERE EXISTS AN ABSOLUTE SAFETY ISSUE. ADDITIONALLY, I HAVE A 20 MONTH OLD CHILD AND OPERATING A VEHICLE WITH NO MECHANISM FOR WARMING ITSELF IS IN MY EYES "UNSAFE" THANK YOU FOR YOUR TIME AN CONSIDERATION.

NHTSA ID
10382310
Incident
Jan 31, 2011
Mileage
70,020 mi
Electrical
Filed Dec 26, 2008

MICE HAVE INFILTRATED THE HEADLINER AREA OF 2007 TOYOTA 4 RUNNER. THEY BUILT A NEST AND CHEWED THE WIRING INSULATION FOR THE SUNROOF SWITCH WHICH CAUSED A SHORT THAT MELTED THE WIRES AND CAUSED THE SUNROOF TO MALFUNCTION. DEALERSHIP REPLACED THE SWITCH AND REPAIRED THE WIRES FOR $360 SINCE THIS WAS NOT COVERED UNDER WARRANTY. AFTER EXPLORING THE INTERNET OTHER PEOPLE ARE EXPERIENCING THE SAME PROBLEMS ON HONDA AND SEVERAL OTHER MODELS. SOME OF THE CONVERSATIONS REFERRED TO THE WIRING INSULATION BEING MADE OUT OF SOY BASED MATERIAL. IS THERE ANY IDEA WHY/HOW ARE THEY PAST THE ENGINE COMPARTMENT AND INTO THE HEADLINERS AND CABINS? COULD THERE BE A DESIGN FLAW? FROM READING THE POSTS A STRONG POSSIBILITY EXISTS FOR ACCIDENTS TO BE CAUSED BECAUSE MICE ARE RUNNING ACROSS PEOPLE'S FEET, ETC. WHILE THEY ARE DRIVING. HEALTH CONCERNS HAVE ALSO BEEN RAISED DUE TO ODORS AND FECES BY THE MICE, SOME OF THESE INFILTRATION SOUND PRETTY BAD ALL OF WHICH CANNOT BE ATTRIBUTED SOLELY TO THE OWNERS. THERE'S NOT MUCH THAT CAN BE DONE TO KEEP THEM OUT OR SO IT SEEMS. *TR

NHTSA ID
10252877
Incident
Dec 13, 2008
Mileage
28,660 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.

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Elsewhere on this vehicle

Data sources

Data on this page last refreshed .