sshamgit
Senior Member
- Joined
- May 9, 2007
- Messages
- 129
- Reaction score
- 0
- Location
- york north yorks
- Your Mercedes
- w211 e220cdi estate 58 reg facelift
e320cdi.. 210model ..2002year .. battery problem ... is it a massive discharge ... alarm problem goes of for no reason over last 2 weeks .....battery has allways been strong..yesterday bat went flat ..recharged .. alarm still seams to work ..siren works .carwould not turn over .. left bat in car and diconnected leads..put charger on and boosted for about 5 or 6 hours .. diconnected charger.. checked voltage it showed 13.3volts .. reconnected leads .checked again. now after no more than 45seconds as expected had dropped to12.80 ... 10seconds later tried to start it just got a click ...after another 10seconds checked voltage again now showing only 11..65volts could this be a massive discharge....qne week earlier battery went flat after alarm went of during the night ..boosted it for less than 4 hours and car started easily... help help ...hope one of u techs can solve it ........thanks in antisipation