Ekort

I noticed the battery life for the key remote is too short. I changed mines November of 2015, I was away for work for 2 months and when I came back the battery on the key fob needs to be replaced already? Anyone have the same problem?

Jasonoff

I vote Aliens...

https://mbworld.org/forums/c63-amg-w...eps-dying.html
https://mbworld.org/forums/c63-amg-w...o-battery.html

HBC350

Mine have averaged about 9 months before needing replacement.

C63-AMG

Guess I have been lucky, I've had mine for 4 years now, albeit I only drive the car on the weekends or nice weather. I can say that the only issue I had was at high elevation last year which I think the alien theory comes into play.

abcut973

I'm in the same boat. Mine last 12 months before having the dash message. I don't drive the car daily. I was told this i normal particularly with keyless go option.

Nashville

If your car has keyless-go and you leave the key in your car (at home in the garage) or even within three feet of the car - it will kill the key battery super fast. for the simple fact that the key and the car are always communicating within that range.

Ekort

thanks for the info.... and the Alien conspiracy...

JRHolt

I was having the same problem with both of my vehicles and all four keys, we switched to Duracell DL2025 Duralock Lithium Batteries and they last a lot longer now