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)