The keyless entry on my passenger front door has quite working. Only the one door will not unlock or lock using the buttons on the handles, the other three doors work fine. I am also noticing that on occasion the unlock/lock button next the the traction control switch sometimes will not do anything unless I turn the accessory on. Not sure if this is a related problem. Has anybody else had an issue like this? I have an extended warranty but not sure if it will cover this. Any suggestions
Thanks

 

Extended warranty will cover it

 

I have the exact same issue on my cls 55. What was the outcome?

 

Had dealer replace the handle cost around $300 with labor. I know there is a DIY thread about this and it's not supposed to be very difficult but I decided to let the dealer fix it. It all works perfect again.