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Just picked up this car a few months ago. Took it in for a PPI at the dealer at time of purchase, everything came back 100%. I've been getting a "12v battery critical" warning over the last few weeks, popped the hood to pull the battery for replacement and noticed that the coolant reservoir appears to be leaking from the cap. Possible it was just overfilled? Or maybe the cap/seal needs replacement? Trying to gauge if this is a cause for concern? Or should I just wipe it off and not worry about it?
Virtually certain that it was overfilled. Mine has done this a few times over the years, and only after a service at the shop/dealership. Clean off the residue and keep an eye on it.
same ****, after Service B in the dealer i had the same as the pic above, i took 200ml i think but still was leaking, not really sure if the cap must be changed because i can see there is an valve attach on the cap
Just picked up this car a few months ago. Took it in for a PPI at the dealer at time of purchase, everything came back 100%. I've been getting a "12v battery critical" warning over the last few weeks, popped the hood to pull the battery for replacement and noticed that the coolant reservoir appears to be leaking from the cap. Possible it was just overfilled? Or maybe the cap/seal needs replacement? Trying to gauge if this is a cause for concern? Or should I just wipe it off and not worry about it?
Engine and oil temps are normal.
Appreciate any insight!
The coolant cap has to be replaced. I had the same issue and got the cap replaced under warranty.
11-07-2023, 01:29 PM
2019 C43 AMG Coolant Reservoir Leaking?
