Key Fob Lock Button Sometimes Works

[lamb58]

Does anyone else have to press the lock button multiple times and wait for it to lock. Sometimes it works perfectly and sometimes it doesn’t. I also recently changed the battery so that’s not the issue.

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[BMWAF]

External interference? Does it happen everywhere or just at one location?

 

[lamb58]

External interference? Does it happen everywhere or just at one location?

Happens everywhere

 

[itzTang]

Haven’t had to lock the car with the remote since forever lol. Just code auto lock .
But have you dropped the keys too many times or got water in them?

 

[MK5_Ger]

I also recently changed the battery so that’s not the issue.

I had the same issue that the key sometimes wouldn't work.
In the end the battery was the cause. It was a new one but it was bad from the factory.
Might want to swap it again.
The voltage measurement was actually fine too! However the voltage did drop, once there was a load connected.

 

[exe36m3]

Sometimes the internals break. My Supra is a CPO and one of the remotes had a dead unlock button. I took it apart and noticed the contact on the circuit board button wouldn't compress anymore.

 

[lucky phil]

Does anyone else have to press the lock button multiple times and wait for it to lock. Sometimes it works perfectly and sometimes it doesn’t. I also recently changed the battery so that’s not the issue.

Well not so fast. Did the issue arise after you changed the battery ? if not then change the battery again and keep fingers off the battery terminals and use a cotton but and iso alcohol to clean the key contacts. It's not that unusual for new batteries to be undervoltage or low on capacity. Sometime they are old stock. Worth a try before going on to more costly solutions.

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