matsice38

Mercedes GLK AdBlue Issue and Engine Won't Start

My 2015 Mercedes GLK diesel is acting up The dashboard says the AdBlue tank is empty, but it's full The error is stored, and the engine won't start Is this an emissions control issue, perhaps the DEF fluid injection system Could the AdBlue output to the dosing unit be defective Has anyone else seen this

A 2015 Mercedes GLK diesel is experiencing an issue where the dashboard indicates the AdBlue tank is empty, despite it being full, and the engine won't start. This problem is suspected to be related to the emissions control system, specifically the DEF fluid injection system. Possible causes include a defective AdBlue output to the dosing unit or a faulty pump. The suggested solution is to have the vehicle inspected by a professional, as the issue was resolved by replacing the pump and clearing error codes.

Did this summary help you solve your problem?

4 comment(s)

That sounds frustrating I had a similar issue with my Mercedes Same symptoms: dashboard alert, engine refusing to start It's likely the AdBlue delivery system Could be a faulty sensor or the pump itself Have you checked for any visible leaks around the tank or lines

Thanks for the reply I don't see any visible leaks When you say 'the AdBlue delivery system,' are you talking about the pump that sends the DEF fluid to the injection system Is there a way to test that without special tools

Yes, I meant the pump and all the lines Honestly, without proper diagnostic equipment, it's tough to pinpoint the exact cause In my case, it ended up being a faulty pump I'd recommend taking it to a workshop with someone who knows these systems well It could save you a lot of headache and wasted money The repair cost me around 250€

Thanks so much for your help I took it to a workshop You were right; it was the pump They replaced it, cleared the error codes, and now it's running great I appreciate the advice

rmh_community_comment_box_header

Want to read your vehicle data yourself?

Order the Carly Scanner and always keep an eye on all important information about your vehicle.

Carly Universal Scanner

starting from

Not your vehicle?

Find maintenance and repair costs for your vehicle.

Carly repair costs

How much will my repair cost?

community_crosslink_rmh_brand

MERCEDES

community_crosslink_rmh_model

GLK