Key Fob and Battery Problems at at the Same Time

[paulgthomson]

Hi,

I have a 2004 E53. My key fob has stopped charging and I now have to manually open the door. Also, I've had to jump start the car due to a flat battery twice in the last week.

I had to get a call out the first time and the mechanic checked that the charging system was doing the right stuff.

It feels like a bit of a coincidence - does anyone know if the battery charging and key charging issues could be connected? I've got a mechanic coming over later this week but am too curious to wait!

Thanks in advance for any pointers.

Regards,

Paul

[andrewwynn]

Very much connected. The fob battery is almost certainly fine. Dead main battery will cause the fob to loose sync with the car so the key needs to be synced.

I wouldn't bother until whatever killed the battery is resolved.