2008 Ford F250 Owner Guide 4th Printing - Page 128

Driver Controls OK TO DRIVE (Diesel engine only). Displayed when the time counter has reached 0 (zero) and the engine is sufficiently warm enough to drive in extremely cold weather (refer to the ENGINE WARMING description mentioned previously). DRIVE TO CLEAN EXHAUST SYSTEM (Diesel engine only). Displayed when the engine control module detects the Diesel particulate filter (DPF) is full of particulates and that the vehicle is not being operated in a manner to allow automatic cleaning. The vehicle operator has to drive the vehicle above 30 mph (48 km/h) for at least 20 minutes to clean the DPF. This will continue to be displayed until an adequate drive cycle is completed. This message is NORMAL. CLEANING EXHAUST FILTER (Diesel engine only). Displays briefly when the vehicle has entered the cleaning mode normally; or, displays continuously when cleaning the filter after a DRIVE TO CLEAN EXHAUST SYSTEM message was previously displayed. This message is NORMAL. EXHAUST FILTER DRIVE COMPLETE (Diesel engine only). Displayed when the vehicle has completed the adequate drive cycle to clean the DPF. This message is NORMAL. OIL CHANGE REQUIRED/ENGINE OIL CHANGE SOON (Diesel engine only). Displayed when the engine oil life remaining is 5 percent or less. When oil life left is between 5% and 0%, the ENGINE OIL CHANGE SOON message will be displayed. When oil life left reaches 0%, the OIL CHANGE REQUIRED message will be displayed. Refer to 6.0 and 6.4 Liter Power Stroke Direct Injection Turbo Diesel Owner's Guide Supplement. OIL LIFE OK (Diesel engine only). Displayed after you have changed the oil. 128 2008 F-250/350/450/550 (f23) Owners Guide (post-2002-fmt) USA (fus)