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Automatic Gearing issues

dnbaa33

Active Member
Sep 22, 2016
8
0
Bristol
Hi all, my Leon Mk3 2018 Automatic seems to have an issue changing gear.

It doesn't seem to remember what driving mode it was previously in, so for example, if I turned the car off while in sports mode, for example, it will start again with sports mode selected in the menu, but the icon on the dash will show it in D for drive, not S for sport. So that's the first thing I notice.

On top of this, it can hit 5000-6000RPM in first and second and third gears, and not change gear for a good 5-6 seconds (which is a long time when the car is screaming along in 1st gear) before it automatically changes gear. I've tried changing throttle position - easing off, pressing down - makes no difference. I can often resolve this if I switch mode, say, back to normal mode then back to sport mode again. It does this regardless of mode, but being in sports mode it seems to behave a little better than Eco/Comfort/Normal modes.

Gears 4,5,6 and 7 all seem to work as normal, and it has no problems selecting the right gear depending on load - so it will drop down to the correct gear if putting foot down, for example.

Any thoughts?
 

Glosphil

Active Member
Nov 10, 2004
498
227
Gloucestershire
I never use Sports mode in my 2018 1.4TSi FR DSG. I don't see the point. If I want a lower gear than I use the steering wheel paddles - when preparing for an overtake or for more engine braking on a steep downhill. My engine (accelerator) & steering are in Sports mode & DSG in Normal.

I certainly don't see the high revving that you do. I live in the Cotswolds so up & down hills on every journey. I complete most journeys without the revs ever going above 3500rpm, & often not even above 3000rpm.

Sounds to me like your car has a problem.
 

dnbaa33

Active Member
Sep 22, 2016
8
0
Bristol
Yeah, I mean it's certainly a problem. From my research, it's either the control module which needs specific programming if replaced, but I did find a video where the user suggested it turned out to be a speed sensor that was corroded on the rear wheel hub, but this was for a Golf using a DSG box, so not sure if the Leon uses the same hardware.