DSG affected by heatwave?

[AdamD]

I've driven literally dozens of DSGs, including several on the MQB platform, and many in high heat and on track. The only time I've experienced this behaviour is in the Skoda, in 40 degree ambient. The car was near-brand-new (oil did not require changing and the 'box did not require servicing), the gearbox was otherwise operating fine - shifts were smooth, clutch operation perfectly normal, etc etc. It had me moderately concerned at the time because the behaviour was new to me. As I said, manual shifting was perfectly normal - so clearly the gearbox was not preventing gearchanges, it was simply using a different shift programme for one reason or another. The shift patterns returned to normal on the next drive (next day) with ambients back in the 20s.

Minimising shifts to keep temps low seems like a legitimate explanation to me - although I've not experienced this in GTIs or Rs driven on track for extended periods. If anything, I'd put it down to the box going into a conservative shift mode to try and prevent a high oil temp condition.

[HPRS230]

Remember, you have lots of air flow on the track (100-200 km/h). Not so much when in traffic...

[adamtmitchell]

https://www.google.com.au/search?q=d...in+hot+weather

It seems to be pretty standard in recent generation VAG models with DSG gearboxes once you get up there temperature wise. I don't think it's anything to worry about unless you'll regularly be driving in 37+°C days.

[Martin]

One of the factors in deciding which gear to use is engine load
When the inlet air temperatures are high the ECU will be managing fuel mixture and advance differently - likely to have less power - that may force the use of a lower gear

[Davefonzi]

I'm glad I'm not the only one... I've experienced this happen on several occasions in my Skoda RS on high 30deg days. BTW, the car is only 6 months old.

Never noticed it on my TDI Golf 7 though...

[AdamD]

One of the factors in deciding which gear to use is engine load
When the inlet air temperatures are high the ECU will be managing fuel mixture and advance differently - likely to have less power - that may force the use of a lower gear

This won't be an engine load issue; the DSG holds 5th to 70km/h or above with the lightest throttle application, on flat and even declines.

I'm sure it's not a fault; it's likely to just be a heat management strategy the DSG is employing for whatever reason.

[dArK5HaD0w]

Never had such heat affected issues with my DSG6 (DQ250) in the 5+ years I've owned it.
Still behaves the same in really cold or really hot temps.

.....even before I got the DSG tune.

[AdamD]

Never had such heat affected issues with my DSG6 (DQ250) in the 5+ years I've owned it.
Still behaves the same in really cold or really hot temps.

Yep, seems to be unique to the Mk3.

[manamp27]

Well it happened again today in Sydney's 40 degree heat. Definitely appears to be a characteristic of the car and programmed into the system.

[Spinifex]

I've driven literally dozens of DSGs..........The only time I've experienced this behaviour is in the Skoda.................

It would be interesting to know if this is a specific Skoda programming "feature"..... or perhaps due to physical characteristics of the bodywork?
ie: no air-cooling being focussed to the gearbox/gearbox-cooler?

I assume that since they are effectively Golf's in a bigger body, the engine parameters/programming would be almost identical, except maybe some tweaking of shift-points due to heavier weight on the bigger Skodas?