Mercedes Vito AdBlue problems and delete
An AdBlue malfunction message on a Vito can be followed by a countdown, and when it runs out the engine won't restart. We read the fault where the van is parked, and the system can be deleted for £330 + VAT.
AdBlue warning signs on a Vito
Any of these on the Vito's display is worth getting checked before the countdown runs down.
- "AdBlue malfunction" or "AdBlue system malfunction" on the instrument cluster
- A countdown telling you how far you can go before the engine won't start
- An AdBlue warning that stays on after a fresh top-up
- The engine management light lit at the same time
What causes AdBlue faults on a Vito
Mercedes AdBlue systems share the same weak points as most others. The pump can fail to build pressure, the tank heater can stop working, a NOx sensor can give readings the ECU won't accept, and crystals can block the dosing injector.
Topping up from an open or old container can bring in contamination, so use sealed fluid. Our AdBlue heater and tank guide and NOx sensor guide cover those failures.
What we do about it
Our £100 + VAT diagnostic check is done at your yard, a job or your home, and it tells you what's actually failed on the Vito. We don't repair AdBlue systems, so a repair needs a Mercedes dealer or SCR specialist for the replacement part.
The £330 + VAT delete takes AdBlue out of the ECU's control and ends the countdown.
What does the AdBlue warning mean on a Vito?
A low level can set it, but an "AdBlue malfunction" message points to a fault in the system itself. If a top-up doesn't clear it, the Vito needs its codes reading.
What happens when the Vito's countdown reaches zero?
The engine won't restart after you next switch off. Plan where the van will stop for the last time and let us know so we can meet it there.
Why is the Vito's AdBlue light still on after filling?
Fresh fluid fixes a low level and nothing else. A light that stays on after filling means a part or sensor has logged a fault, which a code read will identify.
Is it the pump, the heater or a sensor on the Vito?
The dash shows one warning for all of them. Our check reads the codes and live data so you know which part has failed before you order anything.
Can a Vito on the road have its AdBlue deleted?
No. A Vito AdBlue delete is for vans used off-road or going for export only. Read whether an AdBlue delete is legal for the reasons.
Sort the AdBlue problem on your Vito
Send the registration, the exact message and any countdown figure, and we'll book a time to come to the van. Other Mercedes models are covered on the Mercedes AdBlue page.
Eccles, Manchester M30 0SF