Hotter ambient temps cause regen to cycle more?

[ApriliaNut]

I've had my NMS since early November and recently the outside temperature here in the lower desert have risen to the 90's, though \the last 2 days it's only been in the high 70s low 80s.

When it was hotter I did notice the regen cycling more. Off hand I'd say 50% more often.

Is this normal?

Just curious.

 

[Fixmy59bug]

Unless you drive over 200 miles per day, you shouldn't be seeing that many regens. For me, it's approx every 300 miles.

 

[740GLE]

Also don't confuse "fans on" with regens, our '12 at 80K ran coolant very hot before buyback even when not running a regen, quite frequently parking in the garage fans would be on but it had def not been regenning. I marked it up to the horrible coolant system of the Gen2 system and possible radiator clogging.

 

[06bluebeetletdi]

Mine is also 300-350 miles. But it will run the fans at a lower speed whenever I turn off the car if the air temperature is over 70 degrees. Any place I drive is at least 20 miles away.

 

[740GLE]

monitor the coolant via ODBII port, it's prob 220-230F and the fans will run when shut down.

 

[jjblbi]

IMHO a ScanGauge II is must for these cars, I added mine early on. Water temp, boost, EGT, dpf temps are displayed at all times. I typically take it easy for a mile or two before reaching my destinations and then idle until egts come down and drop below 275F, ~ 1-2 minutes.