Why does my keyless remote not work?

BMW logo
FILE - This March 7, 2016 file photo shows the logo of German car manufacturer BMW in Munich, Germany. –Matthias Schrader / Associated Press

I recently had the windshield replaced but have not had any other work done, so why do the remotes not work?

Q. The keyless remote of my 2009 BMW doesn’t work, and my spare key remote didn’t work either. I recently had the windshield replaced but have not had any other work done. Why do the remotes not work?

A. In many cars, the antenna is embedded in the windshield. If this is the case in your car, the issue could be that the windshield installer didn’t properly connect things. As a general rule, whenever something stops working, always look at previously performed work. I have seen many times where a technician didn’t check or fully complete the job they were working on, so checking over previous work is a good basic diagnostic routine.

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John Paul is AAA Northeast’s Car Doctor. He has over 40 years of experience in the automotive business and is an ASE certified master technician. Email your car question to jpaul@aaanortheast.com.