Please help!!!!!

I have recently bought a 2002 (new shape) CLK 320. If i do not drive the car for more than 1 day the battery goes dead. I've bought a new battery but the problem happened again. Should I now try the alternator?Nothing electrical appears to be left on overnight and I'm fed up of asking my neighbours for a jump start.

I read somewhere that it may have something to do with the drivers seat electrics because this is also playing up?

 

Clarke>
My suggestion when it comes to battery replacement is always the same: always check the entire charging system
before you start buying parts. It can get expensive real fast if you buy parts you don't need. You may have hit the nail
on the head with the "seat module" idea. This is a common, or fairly common problem with these cars and has stumped
many people with the same problem. That's the very next thing I would check. But be sure you have somebody hook up
the machine to your battery and check the alternator before you buy one and find out that's not it. If your car is sitting one day and has no ability to turn the car over the next, I'm guessing it's NOT the alternator. Something else is going on.
A lot of places will run that test for no charge in the hope that you will buy any parts you might need from them, but there
is no obligation. I'm talking about here in the US. Hope this helps.

 

Thanks for the advice.

Can only a specialist or main dealer check the charging system?

 

Any mechanic at most auto garages or any dealership can easily check the charging system with a tester. It is simply
hooked up to the positive and negative terminals of the battery and the car is running at idle. This will tell you if your
battery is being fed by your alternator and to what degree. Also, the condition of the battery will be obvious and it only
takes a couple of minutes to do since the hookup is easy.