Auto Stop/Start during warmup

[Skinnee D]

I've been trying to figure out one of the conditions that disables the auto stop/start during engine warmup.

My A/C is switched off (via the illuminated A/C button), but Vehicle Status for auto stop/start with a cold engine still regularly shows a block for some time due to the A/C being required .

What I found is that reducing the interior temp setting a few degrees (e.g. from 22 to 20) consistently clears the block much quicker, even with the A/C off, so you can get the system working noticeably sooner.

Hopefully you might find this helpful for your daily commute - as I am

[monkeyhanger]

SkinneeD: Although it says A/C, it'll be the auxillary heater power demand that deactivates your stop-start. Until the engine is warm enough to provide the cabin with its excess heat, the auxillary heater will be required, and by reducing the set temp from 22C to 20C, you have reduced the demand on the heater.

[iandjm]

Hi,

Is there an auxillary heater on the Gti too?  I have never known a car warm up as fast as the Gti

Ian

[Gingernick]

just said that to my wide this morning as I was dropping her off..the car was nearly at full temp after only a few minutes..couldnt believe my eyes!

[iandjm]

just said that to my wide this morning as I was dropping her off..the car was nearly at full temp after only a few minutes..couldnt believe my eyes!

There has to be something. Last night at freezing point after driving for 2 minutes I had warm air coming out of the vents and the engine temp had risen to 60 deg!

[mistertee]

I found there's a screen on the infortainment that tells you why it hasn't engaged. Usually bizarre stuff like the engine must be runninh??

[iandjm]

Or manouvering mode, seatbelt not fastened etc

[jivemonkey]

Hi,

Is there an auxillary heater on the Gti too?  I have never known a car warm up as fast as the Gti

Ian

The auxiliary heaters have only been fitted to the TDIs, you just may be experiencing better engineering from VW, petrol engines warm up far faster so I'm sure they did something fancy to get heat to the cabin quickly!

[Sootchucker]

I've noticed this too. If I've travelled for 5-10 minutes or so, come to a stop, the start / stop may not activate, but if I momentarily turn the heating temperature down from 22°C to say 20°C, the engine will stop and I can then turn the heating back up to 22°C. Strange, the system must be very sensitive.

[iandjm]

Hi,

Is there an auxillary heater on the Gti too?  I have never known a car warm up as fast as the Gti

Ian

The auxiliary heaters have only been fitted to the TDIs, you just may be experiencing better engineering from VW, petrol engines warm up far faster so I'm sure they did something fancy to get heat to the cabin quickly!

It sure is amazing getting a block that size up to temperature so fast.  My 1.4TSI took 3 or 4 times the time to get warm.  Well done VW