Problems · NHTSA complaints

2006 Toyota Highlander Hybrid problems

Owners filed 650 complaints about the 2006 Toyota Highlander Hybrid with NHTSA between Aug 2005 and Nov 2026. The most-cited component is service brakes (148).

Complaints
650
Filed with NHTSA
Crashes
63
Reported by owners
Fires
11
Reported by owners
Injuries
40
People reported injured
Deaths
3
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Service brakes148
  2. Electrical system100
  3. Vehicle speed control76
  4. Service brakes, hydraulic66
  5. Engine and engine cooling49
  6. Hybrid propulsion system46
  7. Engine44
  8. Power train41
  9. Steering41
  10. Electronic stability control (esc)35
  11. Service brakes, electric30
  12. Exterior lighting22
  13. Air bags21
  14. Visibility18

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Data from NHTSA Complaints API · synced Nov 11, 2026NHTSA vehicle page
02 —Trend

When complaints were filed

Does it get worse with age? Complaints per calendar year filed
View as table
Model yearComplaints filed per calendar year
20052
200617
200712
200824
200916
2010150
2011110
201233
201335
201443
201533
201631
201723
201832
201919
202025
202120
20224
20235
20243
20255
20268

Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.

03 —Owner reports

Top problems in owners’ words

Verbatim from NHTSA complaints, newest first

Service brakes

148 reports9 crashes
“My brake actuator assembly failed while driving. The brakes stopped working. The cost to repair is over $3,000. This is a fairly common problem in the 2006 toyota highlander hybrid. In fact, Toyota extended the car's warranty to cover this issue, but it expired in 2017. The problem usually occurs once the car has approximately 150k miles which is likely outside the warranty period. This is extremely dangerous.”
Owner complaint to NHTSAFiled Nov 6, 2026Service brakesODI 11776370

Electrical system

100 reports1 crash2 fires1 related recall
“While normally driving on the highway and without no warning the vehicle the power steering stops working , it just dies with no power and dash lights warning start to flash and Check Hybrid System turns on. I am not a mechanic nor a technician . The mechanic disconnected the ground cable after waiting about 5 minutes and it resets the system. He told me that it has something that may be caused by some electrical problem . He thinks that it has to do with a recall about some soldering electrical part in the inverter control. This has happened in 3 more occasion and I've been lucky and i have time to let it go to side of the road and i disconnect the ground wire for 5 minutes and connect it back and it resets and then starts to work normal. Since the vehicle stalls completely i fear that this could cause an accident or lost of life due to other vehicles coming behind at high speeds . Please i need help!”
Owner complaint to NHTSAFiled Nov 16, 2021Electrical system, Unknown or otherODI 11440636

Vehicle speed control

76 reports27 crashes1 fire2 related recalls
“THE BRAKE ACTUATOR IS FAILING AND IS MAKING LOUD NOISES. THE CAR DOES NOT BRAKE NORMALLY. I HAVE REPORTED BRAKING PROBLEMS SINCE I BOUGHT THE VEHICLE IN 2007. WHEN IT HITS A BUMP IT ACCELERATES AND I MUST STAND ON THE BRAKES SO I DO NOT HIT SOMEONE. IT LURCHES FORWARD WHEN IT HITS A POTHOLE OR SOME KIND OF OBSTRUCTION IN THE ROAD. WHEN I WORKED DOWN NEAR THE BUS STATION I WOULD HIT THE AREAS IN THE ROAD WHERE THE BUSES CREATED BUMPS IN THE ROADWAY AND IT WOULD LURCH FORWARD. I REPORTED THIS NUMEROUS TIMES AT NORTH BAKERSFIELD TOYOTA. I RECENTLY WENT IN TO REPORT THE NOISE I WAS HEARING AND THEY FINALLY FIGURED OUT THAT THE BRAKE ACTUATOR IS FAILING. I WAS TOLD THAT IT WAS NOT A HAZARD BUT THEY COULD NOT TELL ME WHEN IT WILL TOTALLY FAIL. I BELIEVE IT IS A SAFETY HAZARD AND THERE HAS BEEN A PROBLEM FROM DAY ONE”
Owner complaint to NHTSAFiled Apr 26, 2021Vehicle speed control, Service brakesODI 11413884

Service brakes, hydraulic

66 reports11 crashes
“The contact owns a 2006 Toyota Highlander. The contact stated that while driving approximately 60 MPH, the vehicle failed to decelerate while the brake pedal was depressed. The contact stated that excessive pressure was needed on the brake pedal to stop the vehicle. The ABS and ESC warning lights were illuminated. In addition, there was an abnormal sound coming from underneath the vehicle. The vehicle was towed to a local independent mechanic, where it was diagnosed and determined that the ABS unit needed to be replaced. The vehicle was towed to another independent mechanic for a second opinion, and it was confirmed that the ABS unit needed to be replaced. The vehicle was taken to a local dealer, where it was diagnosed and determined that the brake actuator needed to be upgraded. The vehicle was diagnosed, and parts were ordered for the repair. The manufacturer was not made aware of the failure. The failure mileage was approximately 195,000.”
Owner complaint to NHTSAFiled Jul 1, 2026Service brakes, hydraulicODI 11747659

Engine and engine cooling

49 reports2 crashes2 fires1 related recall
“TL* THE CONTACT OWNS A 2006 TOYOTA HIGHLANDER. WHILE DRIVING APPROXIMATELY 15 MPH, THE TEMPERATURE GAUGE INCREASED. IN ADDITION, THE TRACTION, CHECK ENGINE, AND VHC WARNING INDICATORS ILLUMINATED. AN INDEPENDENT MECHANIC STATED THAT COOLANT FLUID WAS LEAKING AND AN ENGINE KIT NEEDED TO BE INSTALLED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS AWARE OF THE ISSUE. THE VIN WAS UNAVAILABLE. THE APPROXIMATE FAILURE MILEAGE WAS 130,000.”
Owner complaint to NHTSAFiled Sep 18, 2014Engine and engine coolingODI 10637239

Hybrid propulsion system

46 reports1 crash1 related recall
“The contact owns a 2006 Toyota Highlander Hybrid. The contact stated that while driving 72 MPH, the vehicle failed to accelerate as intended while depressing the accelerator pedal. The check engine and traction control warning lights were illuminated. Additionally, the "Check Hybrid System", "Check AWD", and "Check VCS" messages were displayed. The contact was able to coast to the side of the road and had the vehicle towed to the residence. The contact notified an independent mechanic of the failure, and the mechanic stopped by the residence. The independent mechanic retrieved a DTC that the power inverter for the hybrid system had failed and caused the vehicle to go into LIMP Mode. The vehicle was not repaired. The contact called the dealer and was informed that there were no recalls associated with the VIN. The contact stated that when the dealer searched the VIN on the NHTSA.gov website, the VIN search showed that the VIN was included in NHTSA Campaign Number: 13V396000 (HYBRID PROPULSION SYSTEM). The manufacturer was made aware of the failure and informed the contact that the recall did not apply to the VIN. The vehicle remained at the residence unrepaired.…”
Owner complaint to NHTSAFiled Jan 15, 2026Hybrid propulsion systemODI 11711152
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 11, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.