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SwissXC90 · Sep 10th, 2017, 20:29

I think you can trust the engineers on this one

The Stop/Start uses a plethora of conditions to know when it is safe to stop and start the engine automatically, and you can bet that hot engines / hot turbos are not safe to shut down, therefore I'd hazard a guess that the stop / start system will be inhibited if engine temperature is outside the 'box' of nominal operating temperature.

Likewise too flat a battery, too low a fuel level, too low a temperature, engine not at nominal temps, vehicle not stationary, brakes pedal not pushed, etc etc etc - lots of conditions have to be satisfied for stop/start to do its thing.

Sep 10th, 2017, 20:29	#2
SwissXC90 Premier Member Last Online: Mar 20th, 2024 18:26 Join Date: Jan 2016 Location: Cross Country	I think you can trust the engineers on this one The Stop/Start uses a plethora of conditions to know when it is safe to stop and start the engine automatically, and you can bet that hot engines / hot turbos are not safe to shut down, therefore I'd hazard a guess that the stop / start system will be inhibited if engine temperature is outside the 'box' of nominal operating temperature. Likewise too flat a battery, too low a fuel level, too low a temperature, engine not at nominal temps, vehicle not stationary, brakes pedal not pushed, etc etc etc - lots of conditions have to be satisfied for stop/start to do its thing. __________________ XC90 R-Design MY2009, Black Sapphire Metallic. HP-Sound, RSE, Nav, Tel, ParkingCam, BLIS, ParkingHeater, RestHeat, Removable Towbar, Summer: CRATUS 20x8 on Pirelli Scorpion Zeros 255/45, Winter: NEPTUNE 17x7 on Continental WinterContact 4x4 235/65.