"Top Up Coolant" See Owner's Manual
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Joined: Jan 2012
Posts: 564
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From: Australia
AMG
"Top Up Coolant" See Owner's Manual
"Top Up Coolant" See Owner's Manual
This message has come up on my brother's car a couple of times.
No Engine light etc. No loss of power and no coolant leak under the car.
Took the car in to Mercedes Benz.
They said they found it to be the Thermostat.
They repaired it, drove the car out... Then the message came back.
Checked under the hood and it showed a slight loss of coolant. Was still above 3/4 full.
Drove it to the dealer, checked under the hood again and still the same level.
The car has gone to and from the dealer with this issue a 3rd time now.
They've said it could be an "air lock" in the cooling system. They're confident there is no headbolt issue, water in the oil etc.
What do you guys think?
They've said 3x now that they've fixed the issue and obviously it hasn't because the message keeps coming up on the dash and it keeps losing a small amount of coolant.
This message has come up on my brother's car a couple of times.
No Engine light etc. No loss of power and no coolant leak under the car.
Took the car in to Mercedes Benz.
They said they found it to be the Thermostat.
They repaired it, drove the car out... Then the message came back.
Checked under the hood and it showed a slight loss of coolant. Was still above 3/4 full.
Drove it to the dealer, checked under the hood again and still the same level.
The car has gone to and from the dealer with this issue a 3rd time now.
They've said it could be an "air lock" in the cooling system. They're confident there is no headbolt issue, water in the oil etc.
What do you guys think?
They've said 3x now that they've fixed the issue and obviously it hasn't because the message keeps coming up on the dash and it keeps losing a small amount of coolant.
Thread Starter
Super Member
Joined: Jan 2012
Posts: 564
Likes: 1
From: Australia
AMG
Could it be headbolts? Or would it be losing more coolant and running like crap?
I've instructed them not to drive the car anymore.
If it is headbolts, would the engine need to be rebuilt if coolant got into it?
Where would the coolant be going?
I've instructed them not to drive the car anymore.
If it is headbolts, would the engine need to be rebuilt if coolant got into it?
Where would the coolant be going?
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Thread Starter
Super Member
Joined: Jan 2012
Posts: 564
Likes: 1
From: Australia
AMG
Car has been stopped.
It was only driven when mercedes said they had pressure tested it and there was NO ISSUE with it. Invoices and receipts are provided saying there was NO COOLANT in oil and it was "ALL OK".
The car was driven by Mercedes and not by my brother. Only when they'd given it back to him and told him there was nothing wrong with it.
Car has since been grounded at Mercedes and if there's any damage my brother will not be paying a cent seeing as they have misdiagnosed the car 3x and had told him it was ok to drive.
It was only driven when mercedes said they had pressure tested it and there was NO ISSUE with it. Invoices and receipts are provided saying there was NO COOLANT in oil and it was "ALL OK".
The car was driven by Mercedes and not by my brother. Only when they'd given it back to him and told him there was nothing wrong with it.
Car has since been grounded at Mercedes and if there's any damage my brother will not be paying a cent seeing as they have misdiagnosed the car 3x and had told him it was ok to drive.
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Senior Member
Joined: Jun 2014
Posts: 408
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From: North of Pittsburgh PA
Ford Truck, 2014 C63 AMG 507
If you are questioning the dealers 'no coolant in oil' get a sample of the oil and send it for testing on your own.
If there is no coolant in the oil I can't see the need for a complete rebuild over lubrication concerns. Someone may correct me on this.
If there is no coolant in the oil I can't see the need for a complete rebuild over lubrication concerns. Someone may correct me on this.
Thread Starter
Super Member
Joined: Jan 2012
Posts: 564
Likes: 1
From: Australia
AMG
Yeah he's questioning it, because they have misdiagnosed the car 3x and they said they have inspected the oil and there's no coolant in there. (they also said it was fixed, clearly it's not)
If a small amount of coolant has entered the engine, can the oil just be drained etc if there's no damage to anything like rods, pistons etc?
He's sceptical because of the amount of times they've told him "its fixed" and the misdiagnosis.
He asked them to send it away for testing and they said it's very expensive.
He has spoken with them over the past few days and they're going to really check it out properly. It's just a waiting game.
In the mean time, maybe an R35 GTR might be next on the list lol.
If a small amount of coolant has entered the engine, can the oil just be drained etc if there's no damage to anything like rods, pistons etc?
He's sceptical because of the amount of times they've told him "its fixed" and the misdiagnosis.
He asked them to send it away for testing and they said it's very expensive.
He has spoken with them over the past few days and they're going to really check it out properly. It's just a waiting game.
In the mean time, maybe an R35 GTR might be next on the list lol.
Junior Member
Joined: Jul 2011
Posts: 23
Likes: 3
2011 C63 PP
I don't know if this can be any help to you but I had a similar problem not too long ago.
I brought my car for a normal service to mercedes dealer and they noticed me that they saw that I had a small coolant leak while doing the service.
I never saw it leak and had no symtoms, no warning signs or anything, must have been a very small leak. I wouldn't even know about it if they didn't mentionned it to me.
According to my service sheet, they ended up reparing those two thing :
1) They found that the Front Timing Cover was problematic and had to be replaced.
Part : 156 010 24 33
2) They found another leak from the radiator as well while changing the Front Timing Cover.
Part : 204-500-31-03
Your brother might not have the same problem as I did but it could be interesting for him to take a look at these parts since he has almost the same car as me minus the fact that I have the updated headbolts (2011 C63).
I brought my car for a normal service to mercedes dealer and they noticed me that they saw that I had a small coolant leak while doing the service.
I never saw it leak and had no symtoms, no warning signs or anything, must have been a very small leak. I wouldn't even know about it if they didn't mentionned it to me.
According to my service sheet, they ended up reparing those two thing :
1) They found that the Front Timing Cover was problematic and had to be replaced.
Part : 156 010 24 33
2) They found another leak from the radiator as well while changing the Front Timing Cover.
Part : 204-500-31-03
Your brother might not have the same problem as I did but it could be interesting for him to take a look at these parts since he has almost the same car as me minus the fact that I have the updated headbolts (2011 C63).
Thread Starter
Super Member
Joined: Jan 2012
Posts: 564
Likes: 1
From: Australia
AMG
I don't know if this can be any help to you but I had a similar problem not too long ago.
I brought my car for a normal service to mercedes dealer and they noticed me that they saw that I had a small coolant leak while doing the service.
I never saw it leak and had no symtoms, no warning signs or anything, must have been a very small leak. I wouldn't even know about it if they didn't mentionned it to me.
According to my service sheet, they ended up reparing those two thing :
1) They found that the Front Timing Cover was problematic and had to be replaced.
Part : 156 010 24 33
2) They found another leak from the radiator as well while changing the Front Timing Cover.
Part : 204-500-31-03
Your brother might not have the same problem as I did but it could be interesting for him to take a look at these parts since he has almost the same car as me minus the fact that I have the updated headbolts (2011 C63).
I brought my car for a normal service to mercedes dealer and they noticed me that they saw that I had a small coolant leak while doing the service.
I never saw it leak and had no symtoms, no warning signs or anything, must have been a very small leak. I wouldn't even know about it if they didn't mentionned it to me.
According to my service sheet, they ended up reparing those two thing :
1) They found that the Front Timing Cover was problematic and had to be replaced.
Part : 156 010 24 33
2) They found another leak from the radiator as well while changing the Front Timing Cover.
Part : 204-500-31-03
Your brother might not have the same problem as I did but it could be interesting for him to take a look at these parts since he has almost the same car as me minus the fact that I have the updated headbolts (2011 C63).
Originally they said it was the thermostat. They repaired that. They said it was leaking blah blah.
Now there's a minimal leak.
They're checking Spark Plugs, Oil etc. Then they're gona rip the covers off and check.
Money isn't the issue, it's the fact that if you pay for something to be repaired you want it to be repaired, not misdiagnosed, told there's nothing wrong, and have the car returned 3-4x.
Rather have this rectified now with a proper diagnosis, then drive out and have the engine hydrolock in a week because the leak got bigger and coolant is in the engine.
Thread Starter
Super Member
Joined: Jan 2012
Posts: 564
Likes: 1
From: Australia
AMG
They have checked spark plugs and no sign of coolant.
They have done a compression test and pressure test and all is good.
Next step is sending a sample of oil away for testing.
If the sample is negative for coolant in the engine, my brother is still going to get the head bolts done while it's there.
He's been assured that after getting the updated headbolts, if the car is to hydrolock, or have coolant in the system at a later date, he will be reimbursed.
He's just worried about doing the headbolts and finding out the engine is damaged internally due to coolant. But so far, so good against coolant in the engine.
Mercedes keep saying they're confident it's an "air lock" in the system.
They have done a compression test and pressure test and all is good.
Next step is sending a sample of oil away for testing.
If the sample is negative for coolant in the engine, my brother is still going to get the head bolts done while it's there.
He's been assured that after getting the updated headbolts, if the car is to hydrolock, or have coolant in the system at a later date, he will be reimbursed.
He's just worried about doing the headbolts and finding out the engine is damaged internally due to coolant. But so far, so good against coolant in the engine.
Mercedes keep saying they're confident it's an "air lock" in the system.
Super Member
Joined: Jul 2006
Posts: 637
Likes: 3
From: queensland australia
2009 C 63
They have checked spark plugs and no sign of coolant.
They have done a compression test and pressure test and all is good.
Next step is sending a sample of oil away for testing.
If the sample is negative for coolant in the engine, my brother is still going to get the head bolts done while it's there.
He's been assured that after getting the updated headbolts, if the car is to hydrolock, or have coolant in the system at a later date, he will be reimbursed.
He's just worried about doing the headbolts and finding out the engine is damaged internally due to coolant. But so far, so good against coolant in the engine.
Mercedes keep saying they're confident it's an "air lock" in the system.
They have done a compression test and pressure test and all is good.
Next step is sending a sample of oil away for testing.
If the sample is negative for coolant in the engine, my brother is still going to get the head bolts done while it's there.
He's been assured that after getting the updated headbolts, if the car is to hydrolock, or have coolant in the system at a later date, he will be reimbursed.
He's just worried about doing the headbolts and finding out the engine is damaged internally due to coolant. But so far, so good against coolant in the engine.
Mercedes keep saying they're confident it's an "air lock" in the system.
hi
have they given you a quote to replace head bolts thanks
