Check coolant warning message
Thread Starter
MBWorld Fanatic!
Joined: Feb 2007
Posts: 2,550
Likes: 745
From: Cary, NC
2024 AMG EQE SUV , 2021 E63S Wagon - gone, 2018 E63S Sedan - gone
Check coolant warning message
Today I received a warning message to check my coolant level. When I looked at the reservoir, the level of the coolant was significantly down from the minimum level. The level came up after I drove the car for a while, but that was obviously normal expansion. The shop foreman at my dealer mixed up a batch of coolant to add to the reservoir which appeared to take somewhat less than a quart to top off the level. There were no leaks discovered upon inspection, but I had noticed that the fill cap was difficult to remove so it might have been installed improperly and leaking from there. Replacing the fill cap was smooth and it clicked into place so it might have been just the cap being installed incorrectly.
Thread Starter
MBWorld Fanatic!
Joined: Feb 2007
Posts: 2,550
Likes: 745
From: Cary, NC
2024 AMG EQE SUV , 2021 E63S Wagon - gone, 2018 E63S Sedan - gone
Nothing that was visible. The level is holding after the replenishment. The shop foreman stated that it is not unusual to have to add a small amount of coolant on these engines.
Junior Member
Joined: Jun 2020
Posts: 52
Likes: 5
From: NYC
2021 G63 AMG - Matte Black
UPDATE: they found code C151E01 for left front level sensor malfunction. When they raised the truck using the lift the value indicating clearance (i think) didn't change. They had to remove the driver seat to gain access to the adaptive dampening module. They found an open circuit from the connector to the level sensor. The electric pin bushing wasn't locking properly. They replaced the electrical pin bushing and the problem was resolved.
It's still unclear if this was the result of sloppy work from replacing the thermostat. It most likely is but MB service wont admit it is.
It's still unclear if this was the result of sloppy work from replacing the thermostat. It most likely is but MB service wont admit it is.
Last edited by TheRod; Aug 13, 2022 at 06:52 AM.
Member
Joined: Dec 2020
Posts: 162
Likes: 46
Range Rover Velar SVAutobiography
I had a low coolant warning this week. Just slightly low when dealer checked. They checked all hoses and did a pressure test and no issues. Must be accurate about these engines needing coolant every so often.
