Me as well needing experienced ABC garage - I'm in Central London. Normally totally faithful to Woodstock Motors (really brilliant) but worried that ABC issues are getting problematic.
I thought I had a breakthrough with Mark in Rainham through eBay, but just my luck he doesn't do W216 2008 CL500 eBay listing below:
Mercedes CL and SL ABC suspension pump replacement service.
This service is for Mercedes CL500/55's & SL500/55's with abc hydraulic suspension.
The job consists of supplying and fitting a newly reconditioned ABC suspension pump (or as its sometimes called a tandem pump) 4x new pulsation damper O rings (nothing is left to chance) a full suspension fluid change with a new genuine Mercedes 3 micron fluid filter, system bleeding and operation inspection with rodeo mode, safe disposal of the old suspension fluid, labour and the whole job is covered by a unlimited mileage 1 year guarantee.
I have the relavent diagnostic equipment to to read and clear system fault codes, check system live data inc system fluid pressure, carry out first time pump prime and enable rodeo mode.
Im a time served professional mechanic, ive owned and repaired many CL's and SL's and im also a long term owner of a CL55 so i know these cars very well and in the last few years i've fitted around 15 of these pumps and they have proven to be reliable and as above this replacement pump and associated labour comes with an unlimited mileage 1 year guarantee.
£945 all in.
I am based in Rainham Essex RM13 on the London/Essex border.