C220 trouble

Markj1974

New Member
Joined
Dec 5, 2023
Messages
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Your Mercedes
C220 AMG line 66 plate 2017
Engine management light came on yesterday, then an hour or 2 later said ad blue level low engine not start in 462 miles….put 20 litres of ad blue in & checked the ad blue level 5900. Engine management light went off a couple of hours later then. Today couple of hours after driving engine management light came on again & said the same engine not start in 462 miles. Checked ad blue level & low & says Cannot measure fluid level ! Any ideas anyone ? I’m not putting more ad blue in as put 20 litres in yesterday, booked into the garage Monday but I’m just worried if it will not start after 462 miles before I get it to the garage. I’m wondering if it’s a sensor or something that determines the ad blue level.
 

dry run

Senior Member
Joined
Aug 1, 2014
Messages
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Location
Portsmouth
Website
kb-boatpark.co.uk
Your Mercedes
CLS 350d AMG LIne Premium Plus
Probably NOX sensor or if you're unlucky tank failure. Star diagnostic check should reveal culprit.
 


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