Keyhole, what are you doing on the R230 forum? perhaps you are considering trading the CLK for an SL?

 

Ha Ha....if I was still making the oil patch money of yesteryear - maybe.

No. I thought that the R230 battery information I stumbled across was something not provided in the Owner's Handbook, so I posted it here.

 

You know these days that you can pickup an SL for not much more than a CLK, right? Well, at least here in the USA - not sure about your side of the pond. Thanks for the docs anyhow!

 

Great information , so if I have a prefuse f32 80a fuse blowing every time I turn the key in N73 EIS to position 3(start) what does that mean, but if I remove the starter relay it doesn’t blow the fuse

 

2008 R230: Does the "red battery" icon indicate that the BCM is bad? Or can the BCM need replacing whether or not the red battery icon appeared? My repair shop says I need the BCM replaced but I never saw the red battery icon. This was recommended after I couldn't start the car. They claim it had a dead battery because of a bad BCM. Typically, my experience with a weak battery has been a slow start warning. This time I had no warning, just a "single" click sound when I tried to start it. Any ideas?

Thanks
David
Fort Lauderdale, FL USA

 

In my case it was just a blown 100A fuse that sits on the battery control module. It is located in the passenger footwell, behind the Bose subwoofer (that is behind the carpet). Worth a try as a used BCM is $450 on eBay....

 

In my case it was just a blown 100A fuse that sits on the battery control module. It is located in the passenger footwell, behind the Bose subwoofer (that is behind the carpet). Worth a try as a used BCM is $450 on eBay....

Thank you for the quick reply. My BCM is in the trunk and the fuse is next to the trunk battery. That fuse is good. This same thing happened two years ago and I installed a used BCM. It didn't last long. Not wanting to gamble again, I purchased a remanufactured BCM for $600. Hopefully it will last longer. Thanks.

 

I hope that it will work out for you.
It is interesting that from a 2007 (mine) to a 2008 (yours) model SL550 they moved that module and the 100Amp fuse from the footwell to the trunk.

 

75 amp now

 

Thanks for posting.
Any chance with keyless go circuit? In detail ( include pin function of module) ? Particularly for the lock button?

 

Not sure what you are asking. Everything works, keyless entry and door locks. I did notice the trunk battery was low and needed a charge while the starter battery was good.