Monday, April 12, 2021

2010 Mercedes Benz C 300 (204.054) V6-3.0L (272.947) Page 1246


- When the PremAir sensor is removed, it is irreparably damaged and must be replaced.



Question



- Is the PremAir sensor firmly latched and bonded to the radiator?



YES



The latching is OK.Possible cause and remedy



- Replace PremAir sensor.



- The PremAir sensor must be installed and bonded in the second hole after being turned 180锟斤拷.



Note



- When the PremAir sensor is replaced the control unit log must also be sent in for warranty processing.



End of test



NO



The latching is not OK.Possible cause and remedy



- Check whether a PremAir radiator and PremAir sensor are installed, replace relevant parts if necessary.



End of test



2056



PremAir sensor has exceeded the upper range limit.



Possible cause:



- B11/15 (PremAir sensor)



Affected functions:



- Power generation



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Test 1: Check component B11/15 (PremAir sensor).



1. Check component B11/15 (PremAir sensor).



Test 1.1: Plausibility check B11/4 (Coolant temperature sensor) B11/15 (PremAir sensor)



1.1. Plausibility check B11/4 (Coolant temperature sensor) B11/15 (PremAir sensor)