Why does my Volkswagen Jetta lock itself?

May 24th, 2016 by

VW Jetta locks itself after 30 seconds
Is there anything more frustrating than locking your keys in the car? Most of us have done it to ourselves on accident at some point, whether we tossed the keys on the seat while rummaging around, or left the keys in the ignition, right where we can see them dangling. Some drivers have reported that their VW Jetta locks itself after 30 seconds to a minute, so it can be even more frustrating when it feels like your vehicle is the one making the mistake. Today we’re looking into why this might happen to help you troubleshoot and avoid getting locked out in the future.

Reasons why your Volkswagen is locking itself
One of the many safety features modern cars have is the ability to lock themselves. There are a few times this will happen. Typically, cars lock themselves when you drive over a certain speed limit, preventing the doors from popping open or carjackers from opening the door. Further, your car will likely lock itself if you’ve unlocked the doors, but haven’t opened them. This, again, prevents anyone from gaining easy access to your car, but that someone could be you.

Other features: What is the Volkswagen Coming/Leaving Home feature?

Typically, if your car keys are in the ignition and the car is running, this won’t happen unless a sensor fails. This is also true for the door lock microswitch, as these sensors can tell when the door has been opened, preventing the car from relocking itself automatically.

How to prevent your VW from auto-locking

If there’s a fault with a sensor or door latch, you may have to actually go in and get it checked out to fix the problem. You can tell if it’s a sensor by checking the dome light and seeing if it is actually turning on/off when you open the door. If it is not, you likely have a problem with the door sensors. Sometimes opening the rear doors, which frequently see less use, will trigger the sensor and prevent relocking.

Other ways you can prevent relocking? Physically inserting the key into the lock will let your vehicle computer know that you didn’t accidentally hit the unlock button on the key fob, though you’ll likely still need to use the remote to deactivate the alarm system. Even simply starting your car should prevent the doors from automatically locking, but just putting the keys in the ignition will not.

Troubleshooting: Why won’t my Volkswagen start?

A permanent fix if you suspect failure would be to actually bring your car in to have the entire module replaced, though we know that’s not the answer anyone likes to hear. Unfortunately, the best way to diagnose a problem is to hook it up to a diagnostic computer.

If you’ve been having trouble with your door locks, we hope you found this post helpful. Be sure to check back here at the New Century Volkswagen Blog for more VW tips and tricks.