R-Class (W251) Produced 2006-2013: R320CDI, R350, R420CDI, R500

2006 R500- no compressor running

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Old 08-26-2022, 05:14 PM
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2006 R500- no compressor running

I am looking at used R500-
The engine was replaced..
Now the air ride does not after the RR.

With the Key on, no compressor is running (can hear it) .. rear sits flat.

1. Where Do I start?
2. Did the front have air ride too? Its up
3. Is the 2006 R500 one of the Bad transmission.


Old 10-01-2022, 01:31 AM
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My 06 R500 has steel coil strut front suspension and rear air springs. I would check the fuse and relay for Airmatic pump first. Do you have a scanner that can read the Airmatic system?
Old 10-02-2022, 02:59 AM
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2006 R500
2006 falls into the range of the initial batch of bad 7G-tronic transmissions. I believe 2009 is the first year guaranteed to have the updated transmission, but you can't get a V8 in the R class in 2009.

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