Toyota Highlander Power Door Lock Failure – Diagnosis Guide

Having issues with your Toyota Highlander’s power door locks? Here's how to get them fixed.

Power door locks are undoubtedly convenient—until they malfunction. When they stop working, they can become quite a nuisance. Fixing them might be straightforward in some cases, while other times it could get complicated or costly. After identifying exactly what isn't working, refer to the sections below for specific guidance.

All Doors/Multiple Doors Fail To Lock/Unlock

If multiple doors are affected, there’s a good chance the problem lies with a faulty fuse or relay. Replacing the fuse is relatively easy, whereas dealing with the relay is more challenging.

The fuse is typically located inside the engine bay fuse box. Look for the fuse labeled for the doors and replace it with a new one.

As for the relay, it is usually found beneath the dashboard (in most Highlanders) and is part of an electronic control board. To replace it, you’ll need to order a new relay and solder it into place. Without experience in electronics repair, this step is best left to professionals.

Single Door Doesn’t Lock/Unlock

If only one door is problematic, it’s likely due to a faulty actuator motor. This motor controls the entire locking mechanism of the door. If this is your issue, you may have noticed a buzzing sound coming from the door recently, which is often a sign that the motor is failing.

To replace the actuator, follow these steps:

1. First, order a replacement OEM part.
2. Next, remove the door panel by locating and unscrewing all the screws holding it in place.
3. Once the screws are removed, gently pull back on the door. You’ll hear the plastic clips click as they detach.
4. With the door panel off, you’ll see an electrical wire connecting the power door locks to the inside of the door. Carefully disconnect this connection.
5. Peel back the weather-shield plastic cover, which protects the internal components from moisture and reduces road noise.
6. Inspect the power door locking mechanism and locate the actuator motor by comparing it with your new part.
7. Swap out the old actuator for the new one, then reverse the steps.

Remote Key Fob Fails, Door Buttons Work

If your remote key fob fails to lock or unlock the doors, but the buttons on the car doors themselves work fine, the issue is likely a dead battery in the fob. The fob contains a small battery; gently pressing on the sides should allow you to open it. Inside, you’ll find the battery. Simply replace it.

Opening the key fob is usually simple, but avoid forcing it open. If you’re unsure about doing this yourself, take it to your local dealership for assistance.

Questions?

Remember, always consult a professional mechanic if you're uncertain about any repairs. Your safety and vehicle's longevity depend on proper maintenance. Good luck fixing those pesky power door locks!

Air Cooled Type

Air Cooled Type,Fan Motor Air Cool Condenser,Refrigeration Evaporator Units,Refrigeration Air Condenser

Jiangsu Libang Electromechanical Equipment Co.,Ltd , https://www.liboncold.com