W211 Battery Control Module N82

[E270 Owner]

Hi

Need one of these if any ones got one lying around for some beer tokens

 

[E270 Owner]

Any of these part numbers will do

 

[AMGeed]

eBay throws up a few if you are desperate. Cheapest one is £85 mind

MERCEDES E CLASS W211 BATTERY CONTROL MODULE 2115402745 | eBay

 

[C43AMG]

Mine was £ 500.00 for the S-Class, it was three times as big though

 

[guydewdney]

Are you sure its that? I had this as a fault and its the wire to the front relay thats broken.....

 

[E270 Owner]

All sorted out now

Symptom is battery slowly looses charge over a week in winter conditions (heater lights wipers etc)
becomes slower to turn over on the key on first cold start.

Alternator output 14.5 volts on the bench
But
Battery voltage is 13.7 at the terminals
So
Low volts at the battery with or without full load on it remains the same.

The only thing controlling the voltage is the N82

Yea £500 from MB is a bit daft.

Got one for £50 inc P&P coming from a friend in Germany
an upgraded part number as well

 

[Delian]

hi there, i recently purchased a second hand Merc e220 w211 (2005) and this message appears every saint day. i changed the auxiliary battery ... but nothing. so i bought a delphi car diagnose system that helped me to identify the problem : BATTERY ENERGY CONTROL MODULE - BSG211 ---> DTC : 9051 CONSUMER SHUTOFF STAGE 1(PERMANENT) and second DTC: 9050 CONSUMER SHUTOFF, STAGE 2(INTERMITENT). After erasing them, they still appear . But the problem that i have now is this one : i physically inspected the module at the back of the trunk but the part number is not the same as the one that is stated by Delphi. So, on the back, in the trunk i have A211 540 42 45 (that has a hand made hole in the casing and a white wire attached to mother board) but Delphi is reading from the ECU the following PART NUMBER : A211 442 01 55 .please help me