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I have been getting this message(in the picture) on my dash everytime I drive the car. As soon as I fire up the cooling fans are on high! I checked the coolant level, it was slightly low, so I topped it up. Let it sit then went out for a drive. Exact same thing.
According to the manual it could be the coolant temp sensor, low coolant levels or a malfunctioning fan. I know it's not the fluid level because I topped it up, the fan is work, so I ordered a temp sensor this morning. Doing my due diligence I wanted to find some info on how to change it. I can't even find where it is on the engine. Anyone got any suggestions on where it is? Or a link to pics/videos of where it is??
**EDIT**
Not sure if it makes a difference but the temps in AZ just took a nose dive and this seemed to coincide with that timing wise. Not sure if that makes a difference or not.
Changed out the coolant temp sensor. Did nothing. Anyone got any ideas?? Driving around with this thing sounding like an over heating junker is not it....
If you have ability erase codes do so and see if they return. Coolant symbol is odd normally CEL would display. Current CPS part # is 2709051300. But before going any further I suggest having someone with Xentry (MB diagnostics) check it.
If you have ability erase codes do so and see if they return. Coolant symbol is odd normally CEL would display. Current CPS part # is 2709051300. But before going any further I suggest having someone with Xentry (MB diagnostics) check it.
I dont have a scanner at the house to do that. Can I disconnect the - battery terminal for a while and get the dame result?
I dont have a scanner at the house to do that. Can I disconnect the - battery terminal for a while and get the dame result?
hi, did you find out what the problem was? I have an e350 2019 with the same message while all fluids are on the arrow. I went to the dealer but they couldn't find anything..
hi, did you find out what the problem was?
I have an e350 2019 with the same message while all fluids are on the arrow.
I went to the dealer but they couldn't find anything..
Do you hear your engine fan running full blast as well ?
The dealer couldn't find a thing does not help much.
> If you own the car: Do your own scanning, chech engine temp data PIDs
> If you lease: CYA! Document the failures and attempts.
Do you hear your engine fan running full blast as well ?
The dealer couldn't find a thing does not help much.
> If you own the car: Do your own scanning, chech engine temp data PIDs
> If you lease: CYA! Document the failures and attempts.
I can hear the fans are spinning. I noticed that it only gets the yellow coolant message in warm weather. Engine and coolant temp is at operating temperature. dealer has replaced the contact points and the active grill shutters but no success
Last edited by mercedesw213; 07-19-2022 at 02:33 AM.
dealer found nothing billable... electrical glitch?
It seems this temperature sensor is being read wrong in odd circumstances. It's unusual for the ECU itself to get goofy like F-SAM can.
That sets suspicion on the sensor side, unless you can locate a known repair TSB.
Are you familiar with MB leaky sensors ?
Usually it involves engine oil in ECU harness... Inspect for sign of coolant in sensor connector and ECU harness.
It seems this temperature sensor is being read wrong in odd circumstances. It's unusual for the ECU itself to get goofy like F-SAM can.
That sets suspicion on the sensor side, unless you can locate a known repair TSB.
Are you familiar with MB leaky sensors ?
Usually it involves engine oil in ECU harness... Inspect for sign of coolant in sensor connector and ECU harness.
could it be the temperature sensor itself? Mercedes is from 2019 and only 40,000 km young. I have a 2 year mercedes warranty, but the mechanics who work there don't seem to be really experienced with the newer techniques
could it be the temperature sensor itself?
Mercedes is from 2019 and only 40,000 km young. I have a 2 year mercedes warranty, but the mechanics who work there don't seem to be really experienced with the newer techniques
If the sensor or its wiring were going bad, there would be a specific active fault about: open, inconsistent or shorted sensor.
If that error was random, the fault would be archived by date and mileage.
It's up to who looks at all these data to act on them, spend the time to understand the issue or mess with the wrong parts and get a call back...
it's better to work on $800 oil change and $2500 brakes: no challenging wizardry!
Give the dealer 2 fair attemps then reach for the Service Mgr and MBUSA well within your warranty coverage.
🤞
Last edited by CaliBenzDriver; 07-20-2022 at 02:47 AM.
If the sensor or its wiring were going bad, there would be a specific active fault about: open, inconsistent or shorted sensor.
If that error was random, the fault would be archived by date and mileage.
It's up to who looks at all these data to act on them, spend the time to understand the issue or mess with the wrong parts and get a call back...
it's better to work on $800 oil change and $2500 brakes: no challenging wizardry!
Give the dealer 2 fair attemps then reach for the Service Mgr and MBUSA well within your warranty coverage.
🤞
I gave the dealer 4 tries. the first time they only checked the coolant level. 2nd time they replaced the active grill shutters. 3rd time they replaced the connection points of the active grill shurters and on the 4th time they performed a software update on the air conditioning part because there was a malfunction and a new software. but so far nothing has fixed it. I live in the Netherlands and unfortunately they are not that knowledgeable here. no error messages have been reported when reading out, if an error message appears then it is again related to the active grill shutters. I noticed in the morning bij the first start that there is no notification. but after noon when it gets hot outside, the message appears right after starting the car.
12-14-2021, 04:08 PM
