This sound indicates the motor is going bad.
Toyota highlander door lock problem.
If it does use a smart key system all vehicle doors must be closed and the engine start stop switch must be in the ignition on position.
Toyota highlander owners have reported 3 problems related to power door locks not working under the electrical system category.
Video tutorial discussing symptoms of power door locks on toyota is not working right and how to check for easy fixes and replace a door lock actuator if nec.
The 2017 toyota highlander has 140 problems defects reported by highlander owners.
The actuator motor powers the entire door locking mechanism.
If you notice that your door locks are having issues locking and unlocking or you are unable to get the doors to lock or unlock electronically then chances are there is an issue with the door lock actuator for toyota highlander.
The worst complaints are body paint transmission and accessories interior problems.
The door locks may function correctly one moment and in the next will cease to operate.
The most recently reported issues are listed below.
Chances are if this is your problem you have heard a buzzing sound recently.
2014 and later toyota rav4s.
Also please check out the statistics and reliability analysis of toyota highlander based on all problems reported for the highlander.
Toyota door lock actuator class action lawsuit investigation the auto defect attorneys at gibbs law group and isaac wiles burkholder teeter are investigating reports that various toyota models including the highlander rav 4 tundra and camry may have defective door lock actuators.
If the door lock relay has any internal or wiring issues it can cause the door locks to function intermittently.
Once this wears out you have to use a key to lock and unlock your doors.
One of the first symptoms of a possible problem with the door lock relay are door locks that function intermittently.
If you have a single door causing you problems it is likely a bad actuator motor.
If there is no smart key system then all the doors must be closed and the engine switch must be in the on position.
Determine if the toyota highlander model uses a smart key system or not.
2014 and later toyota highlanders.