Mercedes GLC Diesel AdBlue Issue Resolved

My 2020 Mercedes GLC diesel is showing an odd error The speedometer displays a message about an empty AdBlue tank, and the error memory confirms it The car won't even start I've only done 15321 km Could a defective AdBlue output from the tank to the dosing unit really be the problem Trying to get a handle on this emissions control issue, especially considering the impact on fuel efficiency and the SCR catalyst system What is the tank capacity supposed to be anyway

4 comment(s)

Oh man, that sounds frustrating I had a similar problem with my Skoda Octavia a while back Same symptoms: AdBlue warning, no start For me, it ended up being a faulty AdBlue injector, not the tank itself Have you checked that These diesel exhaust systems are so sensitive Makes you wonder about their impact on the environment despite the supposed benefits Do you know if your system is actually injecting any AdBlue

Interesting I haven't checked the injector specifically How would I even go about testing that Is it something I can do myself, or does it require special equipment

Honestly, unless you have some serious diagnostic tools, testing the injector yourself might be tricky I ended up taking my Skoda to a workshop They diagnosed it pretty quickly with their specialized equipment Saved me a lot of headaches Considering the no-start condition, probably best to get it checked professionally

Thanks, I appreciate the input I had it checked, and you were right, the AdBlue output from the tank to the dosing unit was indeed defective The repair cost was around 250€ Glad it's sorted now

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