I went to a Indy shop and got the codes read. It came back with EHC 74- accumulator pressure remains constant. Cleared code and reset system. Pump runs but is noisy.
Is this a easy DIY? Should i buy a compressor from arnott or should i buy a complete assembly from ebay? BMW E39 E53 E65 Air Compressor For Self Levelling Suspension Brand New | eBay