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Great news, sounds like progress. Regarding the rubber jacket, I don't recall my compressor having any sort of jacket on it so not quite sure what piece you mean. The compressor was mounted on rubber fixings as it obviously vibrates when operating, but these will be fitted to the new compressor...

Sounds very much like worn compressor piston ring to me. The fact that the compressor starts and runs for 40s, yet does not raise the car, points toward it generating very low pressure. If the compressor were working, but you had a small leak, it would raise the car to a level where it would...

I have chased odd suspension performance on my '08 S211 over the last 18 months, including replacing leaking airbags and a worn compressor piston ring. Suggestions that may help in your scenario: - I have found that the car does not instantly raise the ride height, even when the live data (on...

The ideal diagnosis is to get the car on Star diagnostics and run the various suspension test routines - this should identify where the fault is. Very few of us have access to Star however. I have recently rebuilt the compressor with a new piston ring on my '09 S211 - mine was riding too low...

Attached below are the various sensors that are used by the HVAC system to make control decisions. If you have a diagnostics tool like iCarsoft, you will be able to track the live data for these parameters to hopefully see where it is going wrong. When you over-ride the Auto setting on the...

I cannot see a path for fuel prices to come down again. There may be small fluctuation, but the medium term trend has to be upward in my view. As a nation, cars are more efficient and we use less fuel. The growth in EVs is continuing. EU7 regs will mean another increase in combustion engine...

I had not noticed this thread until this morning, and sorry to hear of your accident Phil. I have been a very happy 100 mile per day, all weather bike commuter for far more years than I care to remember now. Modern bikes are just so capable in the role, and also allow you to raise many smiles...

As above, accessed from underneath. Martin.

I changed my 16s to 17s (both OEM Mercedes wheels) on my S211 E220. I did c. 10k miles on the 16s, and have done 15k miles on the 17s since the swap. My 16s had worn, budget tyres, and I fitted new, premium tyres to the 17s. I struggle to tell any difference in ride comfort, so would suggest...

With regard to location, looking at WIS (Repair manual), it looks like the module is located low down on the nearside of the engine block - accessed from underneath with undertrays removed. Martin.

I also have a 2008 manual E220CDi, and according to the electronic parts catalogue on my VIN, the part number for the relay unit is A646 153 25 79 so looks like you have the correct part number. Note that EPC states that the part is only supplied as a reconditioned unit from Mercedes...

I had this fault on my S211, and mine was parasitically draining the battery every 48 hours - would be down to 10v after this length of time. Root cause was the alarm siren located within the inner front wing, driver's side, behind the plastic wheel arch liner. It has a rechargeable battery...

I don't know the Mercedes system at all, but I used to engineer the Jaguar Land Rover version and I imagine the principles are similar. The car will have an embedded SIM in a Telecommunications Connectivity Unit, somewhere in the car. It will support every feature that requires the car to...

Possibly the ignition switch itself failing, which I think Mercedes call EWS? Things like the radio, hazards and sidelights/dash illumination will all work if the ignition switch is off. Indicators, engine and almost all other electrics will not work with the ignition in the off position...

I am well aware of the bad press manual Mercedes cars get, but I must say I am perfectly happy with my manual E220cdi - even with moon miles on it. Lovely, smooth and accurate gear selection and a very nice feel to the clutch. The foot operated parking brake is less than perfect on a manual car...

I had a dull knock/clunk from the OSF suspension on my '09 E220 for about 18 months and 12k miles. Only noticeable at lower speeds over sharp bumps. I could not see any play anywhere, nor could my local garage so I lived with it. Then, the NSF spring snapped and I had both springs replaced...

I would agree with this on the later DPF equipped vehicles, as the risk of an expensive failure in the emissions aftertreatment kit is fairly high. However, DPF was not fitted as standard on the 220CDi until 2010 (in the E Class at least). Martin.

I bought a 2009 E220Cdi 18 months ago, 170k on it when I bought it and now on 184k. I am very impressed with the whole car. My example was bought as a very cheap stop gap car, and mine had no history evidence at all. I took a chance on it, expecting it not to last that long, but I have grown to...

I had a Caterham clone with an LS2 V8 (6.0l, 400bhp, 400lb-ft) for a number of years, and finally sold it about a year ago. All of these ridiculous horsepower lightweight cars are magnificent fun on their day, but I found very few days where I could genuinely use it as a late 40s family man with...

For the car to advise on gear selection, it requires a sensor to know which gear is currently selected. I would suggest that this sensor is failing. Many cars use a mathematical calculation based on road speed and revs to determine current gear selection, but perhaps Mercedes fit an actual...