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Daimler warning to car owners of fire risk


Quite a thorough document. I did find much of that from WIS but neither source gives the usual detailed function description of the part in question, the actual coolant pump. I'd like to know the physical implementation of coolant flow control. Is it on/off controlled by Y133 which parts move under the valve control? Which make is this coolant pump, perhaps the part provider would have good function descriptions?

I cannot believe that the issue would be the engine getting too hot. Any driver would easily notice that and it would be safe to drive gently after the first warnings before any part catching fire. There would be more serious issues before a fire because of too hot coolant.
 
UNLESS its one of the auxilliary pumps in the low temperature circuit M43/6 or M 13/5 [ both electric?]which cools the turbo after engine switch off see page 49- a poorly cooled hot turbo might be a fire risk? I'm just guessing
 
Do any of the affected vehicles have a water cooled alternator?
 
UNLESS its one of the auxilliary pumps in the low temperature circuit M43/6 or M 13/5 [ both electric?]which cools the turbo after engine switch off see page 49- a poorly cooled hot turbo might be a fire risk? I'm just guessing

The link posted earlier in the thread mentioned: "The pumps installed can be controlled in terms of their delivery rate. With a so-called demand control, their drive power can be reduced, which in turn should contribute to lowering consumption."

If this is correct, then it is the main coolant pump. But who knows until more details are released (if not already available through TIPS).
 
Did any of you from the hot UK check the recall status of their car from the German Mercedes www.mercedes-benz.de (services etc. there)?

Our local service claimed that the factory database should have the effected cars included. I'd like to see if any car actually pops up from that list. The German recall database did have my W222 on the list even if it is not sold for the German market (recall on the diesel engine control SW update).
 
Diesel Benz try telling the war depot [wife ] that .. like - look out for this pointer going up to here ..
 

From above

The issue was traced to possible leakage in the coolant pump that could heat up components, Daimler said.




The news was first reported by the mass-selling Bild newspaper, which published a copy of a letter Daimler sent to some 800,000 Mercedes-Benz owners affected by the defect that said “the risk of a fire could not be ruled out.”
 
So, same story as the airbags that explode shrapnel into your face during an accident.

Takata airbag recall, largest in history, Just received a replacement notice for my 2008 S class.....
 
So, same story as the airbags that explode shrapnel into your face during an accident.

Takata airbag recall, largest in history, Just received a replacement notice for my 2008 S class.....
That was quick, perhaps the 800 000 cars will all have burnt within 15 years from the first MY with this issue. :mad:
 
I wonder how much coolant will the cooling system need to lose before things get too hot under the bonnet? And does the issue only affect those owners who initially ignore the 'coolant low' warning message, and then go on to ignore the 'engine overheating' warning message.....? I would expect the dash would look like a Christmas tree well before any fire starts...
The coolant is leaking into the brake vacuum system, so the answer is - Very little!
 
If its anything like the OM651 COOLANT pump its vacuum actuated but electrically switched [vacuum on and off] meaning it will be connected to the engine vacuum system which may in turn affect other components-its not clear from the picture
As I said to Markjay, the coolant is leaking into the brake vacuum system. It will not be noticed from outside. When mine was recently fixed, I was told that first problem would probably have been brake failure. It needed a new oil pump, coolant pump, brake booster and vacuum line. The repair took 2 weeks as the parts were on back order.
 
My car is currently in for its annual service and the dealer said my car is affected and they are replacing the pump during the service (great news but i do use a very good local dealer who care about their customers); just very disappointed that i have had nothing official from MB to tell me my car could have be affected. I only know about this issue through forums such as this...
 
I wonder how much coolant will the cooling system need to lose before things get too hot under the bonnet? And does the issue only affect those owners who initially ignore the 'coolant low' warning message, and then go on to ignore the 'engine overheating' warning message.....? I would expect the dash would look like a Christmas tree well before any fire starts...
The problem isn't loss of radiator coolant overheating the engine. The letter from Mercedes says "If an electrical switchover valve within the vacuum system is exposed to coolant, an increase in temperature of the component parts could occur due to an electrochemical reaction. In this circumstance, an isolated risk of fire cannot be ruled out."

I would be more concerned about the risk of having no brakes if the brake servo vacuum pipe was full of coolant and not doing its job.
When I took mine in, after three hours I was told they had done the first test, which proved I had fluid in the vacuum pipe. They needed parts that were on back order. I was not allowed to drive my car home to wait for them to source the part unless I signed a disclaimer saying I was aware that my brakes could fail. Imagine my claim letter to my insurance company! "Dear sirs, Mercedes told me my brakes could fail, but I thought that if I drove slowly, it would be all right". That is what Mercedes are effectively asking everyone who has not received a recall letter to do, until they get enough parts made. If you own any of the cars on the list, PHONE THEM NOW!

Don't trust the dvsa.gov recall page Check if a vehicle, part or accessory has been recalled I entered my reg number and it said "No recalls outstanding" WRONG!
 
The problem isn't loss of radiator coolant overheating the engine. The letter from Mercedes says "If an electrical switchover valve within the vacuum system is exposed to coolant, an increase in temperature of the component parts could occur due to an electrochemical reaction. In this circumstance, an isolated risk of fire cannot be ruled out."

I would be more concerned about the risk of having no brakes if the brake servo vacuum pipe was full of coolant and not doing its job.
When I took mine in, after three hours I was told they had done the first test, which proved I had fluid in the vacuum pipe. They needed parts that were on back order. I was not allowed to drive my car home to wait for them to source the part unless I signed a disclaimer saying I was aware that my brakes could fail. Imagine my claim letter to my insurance company! "Dear sirs, Mercedes told me my brakes could fail, but I thought that if I drove slowly, it would be all right". That is what Mercedes are effectively asking everyone who has not received a recall letter to do, until they get enough parts made. If you own any of the cars on the list, PHONE THEM NOW!

Don't trust the dvsa.gov recall page Check if a vehicle, part or accessory has been recalled I entered my reg number and it said "No recalls outstanding" WRONG!
Hi there. I have the same issue with my s-class. I have been in holiday I Romania, my car has lost his power, I've been in mercedes service and they have told me that there is a coolant in the vacuum system. My car has no more warranty, but they've told me to speak to mercedes uk about this problem, and maybe they will fix it on a GOODWILL? Can you help me please what should I do, or where should I speak with someone who can help me.thanks
 
Hi there. I have the same issue with my s-class. I have been in holiday I Romania, my car has lost his power, I've been in mercedes service and they have told me that there is a coolant in the vacuum system. My car has no more warranty, but they've told me to speak to mercedes uk about this problem, and maybe they will fix it on a GOODWILL? Can you help me please what should I do, or where should I speak with someone who can help me.thanks
Hi,
This is a SAFETY RECALL issue, not related to WARRANTY, so it should be repaired free.
 
Hi,
This is a SAFETY RECALL issue, not related to WARRANTY, so it should be repaired free.
Can you please advise me in which garage have you been? I will try to give them a ring.the costumer services in Coventry are not really good. How can I get in contact with you? Please help me. I'm new here
 

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