S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600

Low Pressure Coolant Expansion Tank Replacement

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Old 12-02-2022, 07:30 PM
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2013 s550
Low Pressure Coolant Expansion Tank Replacement

Anyone ever change one of these ? Its a very small coolant reservoir that sits on top of the M278 engine between the two air filters and in front of the ECU. Apparently where the top half meets the bottom half has sprung a leak right along the side of it.

Is it a fairly easy DIY project or does it get technical ?

2013 Mercedes S550 Base







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