Tow Haul Mode
I realize Tow Haul Mode isn't new but only recently got experience with it and figured I would share some thoughts. We've had the truck (2008 F250 V10) for 3 years but life only allowed for some lo...
Forum Discussion
shelbyfv wrote:
Actually, what I have read is that with Tow/Haul engaged the alternator is programmed to keep providing a significant output rather than dropping down so much after it replaces the starting draw. This may not be true with all brands or years. I haven't verified if this is the case with my Ford, it's just something I read that I thought was interesting and a welcome feature. I have a little meter I can plug in to the 12V receptacle, maybe I'll investigate the next time I drive the truck.
I can’t recall ever reading or hearing of any effect of tow haul mode on the charging system on Ford trucks. There is however a stationary engine operation ECM mode that can be enabled called Battery Charge Protect. It’s only for supporting heavy electrical loads while the engine is running, parking brake is set, and shifter in neutral. When that mode is enabled, it will increase the idle as needed up to 1200 rpm to maintain the battery voltage while using tools or accessories that are drawing significant amounts of power from the truck.
:):)
