Don't wait for the 'starting prohibited' countdown to appear on your dashboard. SCR (AdBlue) system failure often gives warnings before locking the vehicle. Learning to detect these signs can save you from a costly breakdown.
- White traces around the filler cap: A sign of excessive crystallization due to poor venting.
- Intermittent flashing of the UREA warning light: A signal of transient pressure drops in the circuit.
- Ammonia smell from the exhaust: Indicates poor atomization by the AdBlue injector.
What to do if you notice these signs?
Immediately document with photos and request a preventive diagnostic. If the garage refuses or downplays the issue, you will have proof of their inaction in case of a later total failure.
Join the Registry
The more of us report these early defects, the stronger our case against the manufacturers will be.
Are you affected by this problem?
Join the national registry to defend your rights under the warranty of hidden defects (Art. 1641).
Register my case