Pauls500
New Member
Hi all,
So this is a problem I think I already know the answer to but I thought I would garner some expert opinion just the same. I replaced the original AGM rear battery in my W221 S500 a few weeks ago after a major failure of just about everything electrical whilst I was out and about ( not a lot of fun ), the red battery light went out and all was good again until today. Red light back on again and showing 11.6v at the rear battery and 12.6v at the front starter when the engine is running. The front battery is the original one so will be due for replacing (it’s a 2006 car) but I’m guessing I’m looking at a new alternator right ?. Any comments and thoughts more than welcome.
Paul.
So this is a problem I think I already know the answer to but I thought I would garner some expert opinion just the same. I replaced the original AGM rear battery in my W221 S500 a few weeks ago after a major failure of just about everything electrical whilst I was out and about ( not a lot of fun ), the red battery light went out and all was good again until today. Red light back on again and showing 11.6v at the rear battery and 12.6v at the front starter when the engine is running. The front battery is the original one so will be due for replacing (it’s a 2006 car) but I’m guessing I’m looking at a new alternator right ?. Any comments and thoughts more than welcome.
Paul.