[mpm T2 TDI]

I had a 2010 VW Sportwagen TDI that was out in below zero temps several times ---- never had a start/gelling issue. Should be the same for the Touareg.

We hit -20° in VT Friday night into Saturday AM. My T2, with a full tank and additive, would not start. Needed a jump. This is a one year old battery showing 14+ amps. Could it be more of a lack of compression issue than gelling?

Side note, driving home through every varity of Mother Natures muck and mire (and Suburbans on "all season" tires) that could be (and was) thrown at us last night truly demonstrates the prowess of the Touareg on full snows...

 

[mpm T2 TDI]

Do you mean 14+ volts, and if so, while cranking? Starter draw is going to be closer to 100+ amps than 14. Voltage should be 12+ but will drop when cranking and should rise to 14+ while the engine is running and recharging.

Right, thanks volts...

 

[mpm T2 TDI]

Are you trying to start the vehicle before the glow plug light goes off?

Yes, tried with push button start and separately with the key turn on before cranking.