Mercedes W211 2005 - Fault in communication with component B48/1 (Driver - side frontal acceleration sensor)

Alistair Ingram

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Jan 18, 2019
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Your Mercedes
E350cdi W211 OM642
Hello,

My car is showing the SRS light on the dash and STAR is showing the following fault:

'Fault in communication with component B48/1 (Driver - side frontal acceleration sensor) or there is a cable fault'

I understand this component is behind the radiator but having done a bit of digging online I am wondering if this component is the actual cause and wanted to check before replacing it.

The passenger seat occupancy sensor seems to have an intermittent fault where it occasionally triggers when empty, pressing on the seat pad usually resolves this. Could this be the root cause rather than the acceleration sensor?

Many thanks,
 

mersum1es

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Sep 25, 2010
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Finland
Your Mercedes
W212/-09/350CDI, W219/-07/320CDI, EX:W220/-01/320CDI, EX:W211/-04/320CDI, EX:W210/-01/270CDI
pretty much separate things, I would follow star... one thought; was there ANY faults of occupancy sensor?
 
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