What exactly TSB is?
Would like to understand what exactly TSB is?
For an example I have ML350 BT. There is TSB LI18.30-P-055434 for oil cooler gasket issues.
Does this mean I can ask dealer to replace gasket because TSB exist?
Or its just a work instruction?
In my understanding, TSB indicates knowing issue, and must be corrected by manufacturer.
Any thoughts?








A recall campaign or a service campaign is a different story. These will be performed whether or not the car is in or out of warranty.
A TSB (Technical Service Bulletin) first off is not verbiage used in the Mercedes World. In the US market LI (Local Information) and SI (Service Information) is used.
LI follow the format: Complaint, Cause, Remedy.
SI is usually just general info regarding parts, warranty coding or general service info.
I'm attaching TSB, unfortunately there are no words on how to deal with it.
it's related to famous oil cooler leak.
wish MB could tell when did they start using the new part, looks like purple one made from the different material and might last longer.
one again thank you.
A recall campaign or a service campaign is a different story. These will be performed whether or not the car is in or out of warranty.
A TSB (Technical Service Bulletin) first off is not verbiage used in the Mercedes World. In the US market LI (Local Information) and SI (Service Information) is used.
LI follow the format: Complaint, Cause, Remedy.
SI is usually just general info regarding parts, warranty coding or general service info.
I was thinking the same thing, if car is our of warranty, I have to pay for repair even know there is a TSB.
Thank you All.
P.S. Found in WiKi
Due to the inordinate number of pre-2010 OM642 engines needing repair due to heat-related seal degradation causing oil cooler leaks, Mercedes reformulated the seals from an orange color rubber to a purple color Viton seal now used in all 2010 and later engines. There is a Mercedes Technical Service Bulletin that states that the leak can be attributed to an improperly installed seal.[5] This engine also has an inherent design flaw with the TWC temperature sensor (part no. A005 153 40 28) and the part in the electronic parts catalog is now specifying part no. A007 153 74 28; there is no recall on this service item yet. A check engine light may present with the OBD-2 diagnostic code P2031 upon failure of this sensor.[6]
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