kk100

Hello all

Hopefully some of the electric wizzes on here can help me out! I have got the dreaded battery drain issue in my CL. At first I thought it was just my battery going bad so got a new one at the dealers. Fine for two days than it just dead. So got myself a little fuse blade meter from Maplin and set about checking each fuse - of course I left the necessary areas open and locked the car and waited 30mins before checking the fuses. From looking about on the internet it appears that a draw of 50ma to 65ma could be normal for the w215's . Anyway Fuse 82 which I understand covers the following:

AAC[KLA] control and operating unit (N22)
Heating System Delivery (A31)

was pulling 1.26a - so I think the issue is with this one as the combined ma of all the remaining fuses equated to 62ma. Does anyone know what the two items in the points above are/control and what in them could be causing the issue. Any help and comments very welcome
Thanks

tusabes

This will not fix your problem but the following two products at Amazon work as a long term solution to cars with current leaks and dead batteries as they will let you disconeect and reconnect the battery with the click of a remote, no need to get in trunk and remove cable


http://www.amazon.com/gp/aw/d/B00KTS..._1430850192742

http://www.amazon.com/gp/aw/d/B000P4...B4L&ref=plSrch

optimusprime m1

Nice bit of kit wish i could get one over here in the uk .But if the car is not locked up , and let go in to sleep mode it will run the battery down.

kk100

Thanks for that - I never even knew such a thing existed!

I would still like to find my problem though even if I went ahead and got one of these

kk100

I am sure somewhere can post to the UK if you really wanted one

biker349

there have been problems with the memory on the seats drawing power. disconnect the seat modules and see if you still get a draw.

kk100

Thanks I will have a look at this

biker349

where the seat modules the culprit?

kk100

I never got a chance to get a look at the car - hopefully in the next few days I will get at it!

kk100

So when you say seat modules do you mean remove fuses 64 and 66 which are the controls for the driver and passenger seats? Thanks

tusabes

No the seat control modules

They are not fuses

kk100

Ok so it is actually the seat controls themselves. Is there a particular way of disconnecting them?

kk100

Sorry to be a pain but is this located under the seat?

biker349

actually i'm not sure about the seat, but they can be disconnected from inside the door, or at the fuse if there is one for the seats. i wouldn't try disconnecting at the door until you do some research on how to remove the modules form the doors.