VW Polo DSG downside: Having hassle shifting into the primary gear


The difficulty just isn’t reproducible & occurs randomly every now and then. Consequently, some service centres do not even consider me.

BHPian ornov lately shared this with different lovers.

I’ve an odd concern with shifting into the primary gear in my Volkswagen Polo 1.2 TSI which I purchased new in 2015. Now and again – say as soon as in every week or so – the automotive won’t shift into D1 from P or impartial and the one technique to get the automotive into first gear is to press the brake pedal and launch it once more. This has been the case during the last 2 odd years.

I’ve tried researching totally different boards, together with this one. I’ve additionally taken assist from Auth Service centres in Thanisandra and in Hesarghatta in Bengaluru however the issue stays undiagnosed by them. One of many points is that this concern just isn’t reproducible and occurs randomly, every now and then. Some Approved Centre people don’t consider me additionally as they can not reproduce the difficulty. My preliminary suspicion of some swap linked to the brake pedal going flawed was additionally checked, however there seems to be no concern with the brake pedal swap.

Since it’s exhausting to breed the difficulty, I’ve made a small 1-minute video and am attaching a zipped file of the identical. It could be of nice assist if any BHP’ian might assist diagnose the difficulty. I’ve already modified gear oil and DSG oil as some boards mentioned that oil is the issue, however that has not helped and I’m nonetheless noticing the difficulty.

This is what BHPian docsinghal needed to say concerning the matter:

I’ve the very same concern with my Polo GT 2015.

Azaan says that he’s seen it in lots of automobiles with the identical gearbox and even he wasn’t positive of the rationale behind it. We modified the oil such as you did and did a whole reset of the DSG too. The difficulty persists.

I feel it’s received one thing to do with one thing carrying out and therefore the clutch just isn’t partaking. If we transfer the shifter to D and launch the brake pedal instantly, it probably takes just a few microseconds additional to try this. It initially did as a result of it doesn’t occur in the event you transfer the shifter after which take just a few microseconds additional to launch the brake pedal.

For now, Azaan has urged that I preserve driving and we are going to intervene if some other signs crop up. Like your automotive, it has been there for a few years in my automotive too however hasn’t led to any additional failures.

Would like to know if anybody can diagnose the difficulty.

This is what BHPian JoshMachine needed to say concerning the matter:

The same old/security operation to shift the DSG gear lever into D or S is to truly first press the brake pedal.

The issue would not appear to be associated to the DSG oil substitute. The oil circuitry’s major perform over right here (and in lots of different gearboxes) is for cooling.

The difficulty talked about right here, from what I’ve understood, of not having the ability to transfer the gear selector or the selector not slotting into “D” mode might be probably linked to what’s referred to as the “Corridor Sensors” and the related wiring harness.

Seek advice from the beneath diagram:

Quoting from this put up.

The first perform is to register the place and make it out there to the mechatronic unit by way of the CAN bus. Based mostly on the alerts, the management unit implements the motive force’s D or R or S or Tiptronic command and controls starter launch.

If the management unit detects no selector lever place attributable to a malfunction of the senders or the solenoid, then each the clutches are opened. The trigger has been apparently attributed to the gear shifting wiring harness within the meeting. The difficulty round this malfunction is famous by a transmission warning code.

The first decision provided has been to restore the harness else recommend a whole substitute of the shifter meeting.

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