It's been a while since I've been having these issues and I never came around to posting this until now. My 2005 S430 is equipped with Keyless Go and it's been a couple of months now but a couple of the lock buttons stopped working. Why would this happen?? If there are anyways to fix this, what are they?
Thanks!,
Mario

 

Generally this means the door handle needs replaced. Not sure if moisture/condensation gets the best of them after a while or what, but it is a fairly common issue. I am unsure of a repair other than replacing the handle.

 

I had the same thing with my driver's door handle. The car would unlock fine in the correct manner but the little button to lock the car did not respond. The dealer replaced the entire handle, good ol' CPO!

 

The average price of one door handle with paint and labor is $500. We had two handles replaced on the left side for $500 because we know our service advisor I don't believe there is a way to fix it, so you have to replace it unless someone found a miracle solution.

 

YIKES - $500? I thot it was a chip inside, so just need to replace that inside. My S600 is has 3 bad handles and getting them fixed this week - thank God for CPO!!!
PL

 

It is really strange because every handle works when I go to unlock the car but to lock it only the rear-left and front-right doors work. Do I really have to replace them?

 

Mine was the same way. Handle was replaced.