OK. During normal driving and moderate traffic, my Info. screen goes crazy! Indicating Failure Warnings... ABS, BAS, ESP. Any help with possible causes and cures would help, so I can avoid the cost of 'Discovery' at the shop.
2000 E55
Thanks.
BTW. The owners manual says the systems BAS & ESP, will fail/disengage/go offline??, if there is an ABS failure. So then would a brake job, which I am due, correct the ABS failure?
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2003 c320 Sedan - Completely updated to 2005 spec with all euro and usa options
2002 s500 Sedan - Completely updated to 2006 spec with all USA options and some euro options.
I changed my battery a month ago I just used the MB battery (stock). The battery on my 2000 E55 seemed fine, but I started getting a BAS/ESP Malfunction Indicator. I went to the dealer and my service advisor told me that the brake light switch gone bad. They replaced the swicth and sure enough my It's fix. Then the very same day my battery went dead. The battery voltage was dropping down under 10 volts at times which is the threshold for the ESP/BAS system according to the Owners Manual.
The battery isn't that expensive I paid the MB Roside Service around $ 117. The back seat cushion is easy to remove. There are two plastic levers you toggle to unclip the front edge and it comes out. The battery is under the right hand passenger's area. Make sure you get a battery that has a connection for the vent tube. The vent tube vents any hydrogen that boils off the battery under the car. It is a clear plastic tube with a 90 degree elbow at the battery end. It connects on the inboard side of the battery. This is important. There was a recall on the W202 C-Class because batteries were exploding. The battery on that car is in the trunk. Replacemnt batteries without the vent were installed and hydrogen accumulated in the trunk. When the trunk was opened the switch for the light supplied a spark. One little convenience you may not notice at first. There is a plastic cover on the rear wall of the passenger footwell. It is an access to the chassis end of the negative battery cable. Remove the cover, disconnect the cable, bend it back and clip the cover partially in place over the cable so the cable cannot touch ground while you work.
If you plan to replace it yourself you need to do the following:
You will have to synchronize the windows, seats, sunroof, key and ESP/BAS and enter the radio code when you disconnect the battery ( In my case, I have a Navi. all you do is turn in on and press "SYS" for system info. and it will resync. itself. Basically, run the windows down to the bottom and hold the switch for a few seconds. Do the same going up. Then test the express up/down features. Same with the sunroof. I can't remember exactly how to do the seats, but it is a similar process. The key should resynch a few seconds after inserting it into the switch. The BAS/ESP will reset after turning the wheel all the way left and right. The instructions are buried in various spots in the Owners Manual - you can find them with a bit of patience.
"JamE55"... No issues in the acceleration. However the drive seemed more jumpy over bumps. This could be imagination due to my knowledege of the Warnings.
"JOE55" Pic's coming soon.... Ok so I had infact remove the rear seat cusion in a failed attempt to restore my CD changer (don"t even ask). I remember seeing a Les Schwab Battery. Appeard fairly new.(at a glance) However, I will take another more detailed look for the vent tube connentor.
ABS...BAS/ESP WARNINGS!!! Failure 
Any help with possible causes and cures would help, so I can avoid the cost of 'Discovery' at the shop.
Linear Mode
