When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
W204 2010: the battery is drained because not charged while the vehicle is moving
My car:C-class W204 2010,it has phenomenon: every 3-4 days the battery is weak, can't start the car.
I have replaced new battery, generator IC, battery sensor but not solved the problem.
I checked and noticed: when the car starts in place, UB > 13V, the battery is charged normally. If moving the car, UB drops to 12.5-12.7V, IB is negative, battery is not charged (see picture)
Has anyone encountered this situation? help me!
When parking:
W204 C200, BMW E30 M3, 1980Gt Mini, Toyota Corona, KTM 200 EXC.
Hi,
I have had really good results with Ctek battery chargers mine is 5 amp unit, I think first you need to fully charge your battery with Ctek or modern charger to make sure the battery is fully charged and topped off at around 13.8-14v.
Then start and see what the dash display is saying once engine running, with above idle should see 13.8 or above up to 14.5V.
I may be that you have had the battery go flat and has not quite fully recovered with your charger then short drives are not recharging it sufficiently.
05-26-2021 | 05:19 AM
