Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

How to Solve the No-Start Issue Due to the AdBlue Light on a Mercedes E-Class W213

Model: Mercedes Classe E W213 - Years: 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
Part: AdBlue warning light

See other generations:
Video tutorial

The no-start issue on the Mercedes E-Class W213 due to the AdBlue warning is caused by an engine control unit lock procedure. An electronic diagnosis is necessary using a specific diagnostic tool (Xentry, Star, Autel, Launch, Snap-on). Read all the fault codes stored in the control units (engine, SCR, AdBlue) without clearing them immediately.

Check in real-time the parameters such as: AdBlue level indicated by the control unit, its temperature, the status of the pump and heater, as well as the values from the NOx sensors (upstream and downstream of the SCR). Often, the lock activates even when the tank is full; in these cases, a re-learning procedure for the AdBlue must be performed, after which the control unit requires a driving cycle to complete the tests and exit the lock state.

Remember to use only fluid that is no more than a year old and of high quality: the AdBlue filter should be checked and replaced periodically, just like the injector.


Posted on 12 July 2026 by ScegliAuto


Related tutorials

Viewing the AdBlue Level of the Mercedes E-Class W213
Viewing the AdBlue Level of the Mercedes E-Class W213
Mercedes Classe E (2016-2023 / W213) .. If the AdBlue tank level of the Mercedes E-Class W213 is too low, a control system prevents starting. To check the tank level, turn on the instrumentation,.. …
How to Change the Remote Battery on Mercedes E-Class W213
How to Change the Remote Battery on Mercedes E-Class W213
Mercedes Classe E (2016-2023 / W213) .. If the remote for your Mercedes E-Class W213 has stopped working due to a dead battery and you want to replace it yourself, follow the.. …
Reset the AdBlue Warning Light on the Mercedes E-Class
Reset the AdBlue Warning Light on the Mercedes E-Class
Mercedes Classe E (2016-2023 / W213) Today's instructions will show you the steps to reset the AdBlue warning light on the Mercedes E-Class. First, get inside the vehicle and connect you…

Other guides you may be interested in

How to reset the tyre pressure warning light on the Kia Niro EV?

To reset the tyre pressure warning light on the Kia Niro EV, inflate the tyres until they reach the correct pressure value. This value is indicated on the sticker attached to the driver's door pillar. Once the tyres are inflated, turn on the instrument cluster to check that the warning light has completely disappeared from the display. If it is still present, you may need to drive for a few miles to ensure it disappears completely from the screen.

Watch the video!


by ScegliAuto

More videos