Last January I spent a night in central Quebec and the temp dropped to -31F that night.At 8AM the next morning the thing started and ran like a champ so whatever heating system they've designed for the DEF system seems to work well.
Originally Posted by BMWTurboDzl
17,000 miles. Vehicle saw parked outside 24/7 and experience week/month long sub-freezing temps. Never had a warning.
No problems ever.
Currently:2011 MB E350 Bluetec / Palladium Silver / Nav / Active Cruise / HarmonKardon Logic7
Formerly:2009 335d / Monaco Blue / Beige Leather / Nav / iDrive / Xenon / Sirius / HD Radio
Last edited by listerone; 03-08-2011 at 02:38 PM.