EGR cooler leak and intake-manifold fire risk on 30d and 40d diesels
SeriousEngineEvery X6 xDrive30d and M50d built before late 2021 sits inside BMW's twin EGR actions. R/2022/206 replaces the EGR cooler module on cars built from December 2013 to October 2021 because the cooler can leak internally, letting hot soot-laden gas damage the intake manifold; 319,399 UK vehicles are involved. R/2022/255 adds an engine management (DDE) software update with better leak detection to 322,745 UK cars. The B57 engine in the G06 is the same family, so a car with an incomplete recall history can fail on the road with a burning-plastics smell, loss of boost and a lambda or EGR fault code.
Burning plastic or hot soot smell from the engine bay after a motorway run, White or grey smoke from the exhaust and a sudden loss of power with a warning message, Coolant loss with no visible leak, or a coolant warning at the next start, Engine management or EGR fault codes such as boost deviation stored in the DDE
- Run the registration through the DVSA recall check and confirm R/2022/206 and R/2022/255 are closed, not just notified
- Ask for the dealer invoice showing the EGR cooler module was replaced, since the software action alone does not fix a leaking cooler
- Cold-start the car in an open yard and check for smoke, then inspect the manifold area for oily soot deposits
- Check coolant level and inspect for residue around the EGR pipework and manifold joints