Aux heater not working - 2509 heater booster positioner signals fault - w220 CDI 2003

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Stavy01683

Stavy01683

New Member
Joined
Nov 9, 2023
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8
Location
Rowhedge, Essex
Car
S320 ALMANDINE-BLACK
Afternoon,

My aux heater doesn't seem to be working it has the above stored code. Anyone experienced this code before?
 
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