Q: Door unlock doesn't always work

asked by on

The passenger side doors don't always unlock automatically (either through the remote or switch).

The passenger door locks are controlled by the body computer on the Highlander. In this case either the wiring to the passenger door lock motors is compromised, the signal to unlock the doors is lost before it gets to the body computer, or the body computer is faulty. Since this is an intermittent issue, it leans towards a door harness issue The door wiring harnesses need to be checked, especially at the lock motors, to see if the activation signal is present. Door harnesses are susceptible to connection issues especially in flex points where the door opens and closes and in the door harness connection to the main body harness. You may want to enlist he help of a mechanic, such as one from YourMechanic, who will have the tools and training to diagnose this door lock issue.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Door unlock doesn't always work

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Bad experience with CVT

Lemon laws vary by state, but in general, the manufacturer has three attempts to successfully repair the original concern before Lemon proceedings can begin. In regards to notes that should be made when replacing the transmission, be sure that the...

Q: Lug nut caps always falling off of the wheels

This is a common problem with many vehicles that use a two-piece lug nut design. In general, the outer piece of the lug nut loses tension on the inner lug nut due to over-tightening or normal wear & tear. If...

Q: Ford Explorer sport not shifting/running right.

Hi there. Thanks for writing into YourMechanic.com about your Ford Explorer. It's possible that you have a transmission speed sensor or other sensor that is sending inaccurate information to the ECU, or you have a mechanical issue inside the transmission....

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...