W211 Airmatic issue sagging at the back

[Hillman]

Hi All

I have just had a star diagnostic done on a w211 270cdi with airmatic and I have a couple of issues indicated. The faults are:

5260 Y54 (Right rear axle damper valve unit) Y54y1 (right rear solenoid valve 1) Open circuit

5270 Y54 (Right rear axle damper valve unit) Y54y2 (right rear solenoid valve 2) Open circuit

Does anyone know if I will need to replace the entire strut or are these units a replaceable item? If it is the strut how difficult are these to change?

Thank you in advance for any assistance you can offer

 

[television]

The Y54 is in the strut and part of it,,, now do not make the same mistake as me and just replace the strut for my problem was a poor connection in the control ECU and it could not find the Y54, so do just get some non drying switch cleaner and remove the multi plugs from the control ECU and spray them and re fit and try the car first

 

[Hillman]

Television

Thank you for your reply. Where will I find the contolr ECU?

Thanks

Paul

 

[television]

What you could do is to measure the sensor the other side and compare it with the other and a simple multimeter would do this just fine.

I will look to see where it is on your car later in the day and if possible some connector details.

 

[MBNZ]

I've had the same issue on my E320 CDI, the dealer checked the car and said it's the Control Module that needs to be changed.
O'm looking at a used part as the brand new one from the dealer is quite expensive and they do not have them in stock, should it be a straight forward plug and play or does this need to be re programmed??