2006 Toyota Highlander Hybrid Problems

What owners report

Complaints about the 2006 Toyota Highlander Hybrid center on two areas: brake behaviour at low speed and loss of drive power. Owners most often describe a momentary release or forward surge while braking over bumps or during the shift from regenerative to hydraulic braking, and a separate group describes the vehicle shutting down at speed with hybrid-system warnings, which dealers typically traced to the inverter. Electrical and accessory problems such as power steering loss and warning lamps are also common, and the median reported mileage is around 90,000.

1. 1
   Hybrid propulsion system

   Loss of power, hybrid warning lamps, inverter replacement

   • 269 complaints (73%)
   • median 88,000 mi at 5.5 yrs old (241 state mileage)
   • 27 mention a crash, fire or injury
   • owner-quoted repair $7,000 (median of 50 quotes)
   • filed 2006–2026

   Owners report the vehicle losing power and stalling while moving, often at highway speed, with the check hybrid system and related warning messages appearing on the dash and the car sometimes failing to restart. Complaints state that dealers diagnosed the hybrid inverter and replaced it, sometimes under warranty and sometimes at considerable cost. Some owners note the events came on suddenly with no prior warning. Reported from roughly 30,000 to over 200,000 miles, with many instances in the 60,000-150,000 range, often during highway driving or acceleration.

   Recall 13V396000Recall 11V342000

   What to check: Ask whether the inverter has ever been replaced and whether the inverter recalls were performed on this vehicle. Watch for hybrid warning lamps on the dash during a test drive or at start-up.

   2 excerpts from owner complaints in NHTSA records

   “2006 Highlander Hybrid inverter failure caused a complete power shut down and left me stranded on the road. There was no power, no brakes, no steering. I could have been hit by cars in front or behind. Lucky that I was not on the freeway going 70 MPH. The failure had no warning nor any symptoms. Prior to the failure, I drove the car approximately 70 miles earlier during the day.”

   NHTSA complaint #10408532, filed 2011-06, 69,000 miles

   “My wife and I were travelling on I-95 (southbound) towards richmond, va. My wife was the driver. We were steadily travelling at a speed... Between 65 and 70 in the left lane (required speed limit). All of a sudden, with no warning, the panel lights started blinking and the power to the car was shut off. My wife was screaming because she was not able to control or effectively apply brakes. She tried and pulled car off the road barely and we pushed it off to a safe side. …”

   NHTSA complaint #10727019, filed 2015-06, 180,000 miles
2. 2
   Brakes

   Brake actuator failure and warning lamps

   • 128 complaints (35%)
   • median 118,000 mi at 8.9 yrs old (122 state mileage)
   • 8 mention a crash, fire or injury
   • owner-quoted repair $2,600 (median of 41 quotes)
   • filed 2006–2026

   Owners describe multiple warning lamps (VSC, ABS, brake and traction) coming on together, sometimes followed by a hard pedal, reduced braking or a brake system that would not engage. Complaints state that dealers diagnosed a failed brake actuator assembly and quoted repairs often in the thousands. Some owners mention a warranty extension on the brake actuator and that the coverage had expired before the failure. Mostly reported over about 100,000 miles, with several cases in the 120,000-180,000 range.

   4 related service bulletins

   What to check: Check that all dash warning lamps go out after start-up, and ask whether the brake actuator has been replaced or inspected. A service bulletin describes warranty handling for brake warning lamps tied to the actuator assembly, so ask for any related repair records.

   2 excerpts from owner complaints in NHTSA records

   “I was driving my car and when I brake to slow down I heard a chime and a check vcs system warning came with ABS , brake and slip indicator ,master warning light and electronic controlled brake system warning light came on too. I have found that in 2013 there was a safery recall dlf(d2f) on certain highlander hv 2006-2010.”

   NHTSA complaint #10992069, filed 2017-05, 122,000 miles

   “Brake actuator assembly is malfunctioning, and is causing the vehicle charging system light to activate which in turn does not allow you to start the vehicle. I was told that if I was to continue driving with the malfunction, I could lose my breaking system while driving. Toyota is aware of this problem, and refuses to do a recall on my vehicle. The cost to repair is over $2100. Faulty braking system should be a priority for Toyota.”

   NHTSA complaint #11072374, filed 2018-02, 107,000 miles
3. 3
   Brakes

   Brakes briefly release or surge at low speed

   • 80 complaints (22%)
   • median 50,000 mi at 5.0 yrs old (72 state mileage)
   • 17 mention a crash, fire or injury
   • owner-quoted repair $3,426 (median of 10 quotes)
   • filed 2008–2018

   Owners describe a short interval while braking, often between about 10 and 30 mph or when crossing a bump, pothole or train track, in which the car seems to coast or lunge forward before the brakes take hold again. Several say they had to press the pedal harder or a second time to stop. According to the complaints, dealers commonly said the behaviour was normal for a hybrid or could not be reproduced, and some owners were told the transition between regenerative and conventional braking explained the feel. Reported across a wide mileage range, from a few thousand miles to well over 100,000, and some owners note it is more noticeable in cold weather or at low speeds over uneven pavement.

   What to check: On a test drive, brake gently over a speed bump or rough patch at low speed and see whether the car pauses or rolls forward for a moment. Ask the seller whether the condition has been reported and whether any inspection of the brake system was done.

   2 excerpts from owner complaints in NHTSA records

   “My 2006 Highlander Hybrid brakes do not grab immediately when I am driving forward and going over a pot hole or train tracks while braking to reduce my speed. This occurs any time I am in that situation. It is even more noticeable when turning and braking while going over a pot hole or train tracks. I have asked the dealer to check this out 2-3 times. They don't seem to test drive it, just test the brakes and say they are okay.”

   NHTSA complaint #10305061, filed 2010-02, 35,000 miles

   “I have an 06 Highlander Hybrid, a have problem with its brakes it losses it grip for 1 second or less on light braking and sometimes it surges before the brakes hold. This happened usually in the morning at cold starts occurring 3-4 times a week. I complained to a Toyota dealership and they told me that it is because of the transition from regenerative to traditional braking. I just felt not safe because it might lead to accident.”

   NHTSA complaint #10326635, filed 2010-04, 59,166 miles
4. 4
   Vehicle speed control

   Unexpected acceleration at low speed or when braking

   • 54 complaints (15%)
   • median 72,000 mi at 5.5 yrs old (49 state mileage)
   • 15 mention a crash, fire or injury
   • owner-quoted repair $7,000 (median of 7 quotes)
   • filed 2006–2026

   Some owners describe the vehicle accelerating unexpectedly at parking-lot speeds, when manoeuvring in a driveway or while the brake pedal was being pressed. In several accounts the car moved forward into an obstacle before stopping. Complaints mention that inspections found no clear mechanical cause. Reported across a broad mileage range, from a few thousand to over 150,000 miles, typically in low-speed manoeuvring or braking situations.

   Recall 11V112000Recall 06V2530001 related service bulletin

   What to check: Ask whether the floor carpet retaining clips and accelerator pedal recall work were completed. During a test drive, note whether the car creeps or surges when you release the pedal at very low speed in a car park.

   2 excerpts from owner complaints in NHTSA records

   “My wife was parked in front of our apartment building, idling with her foot on the brake, when our 2006 Toyota Highlander Hybrid suddenly accelerated and crashed into a gate. Before the car crashed, she repeatedly applied the brake and even put the car in park. The car did not stop. After the impact, the engine continued to rev and accelerate before finally stopping. This had never happened before. The body has been repaired, but per Toyota, nothing mechanical or electronic has been touched. …”

   NHTSA complaint #10355965, filed 2010-09, 40,384 miles

   “I was driving our 2006 Toyota Highlander Hybrid up the driveway and around to the back of our home where we have a rear entry garage. As I turned in the driveway I started to slow/stop the car so I could backup to pull into the garage the car accelerated suddenly striking a small tree in the yard doing a lot of damage to the left front, left front wheel and left quarter panel. It's possibly totalled. It was as if a something siezed the car and suddenly pulled it forward at a high rate of speed. …”

   NHTSA complaint #10417863, filed 2011-08, 58,000 miles

Buying note. Check the service history for inverter and brake-actuator work, confirm the open recalls were completed, and pay attention to hybrid and brake warning lamps on a test drive. A pre-purchase inspection that includes the hybrid and brake systems is worth the cost on this model year.

Summary written with AI from a sample of 60 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.