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Thread: Auto hold - DSG - burning clutch?

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  1. #1
    Join Date
    May 2010
    Location
    Melbourne, VIC
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    Quote Originally Posted by Hillbilly View Post
    I have sat talking with my foot on the brake for 10 mins and have no hot smells but then the Passat has wet clutches so is more amenable to that. The 7sp Dry clutches are the problem for heat.
    To my knowledge, when stationary, with the selector in any position other than P or N, on the brakes or with the handbrake engaged, the gearbox has first gear (or reverse gear) selected, and the clutches are disengaged. The clutches engage when you use the accelerator, or motion is detected.

    You can test this for yourself. Disable stop/start and autohold, stop on an incline. When you release the brakes, you'll feel the car roll backwards for a fraction of a second before the clutches engage and slow or stop the rollback. The effect can be disconcerting if you're not expecting it, especially when reversing, but you can mitigate the effect with auto-hold.

  2. #2
    Join Date
    Dec 2011
    Location
    Pacific Paradise QLD
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    Quote Originally Posted by kleung View Post
    To my knowledge, when stationary, with the selector in any position other than P or N, on the brakes or with the handbrake engaged, the gearbox has first gear (or reverse gear) selected, and the clutches are disengaged. The clutches engage when you use the accelerator, or motion is detected.

    You can test this for yourself. Disable stop/start and autohold, stop on an incline. When you release the brakes, you'll feel the car roll backwards for a fraction of a second before the clutches engage and slow or stop the rollback. The effect can be disconcerting if you're not expecting it, especially when reversing, but you can mitigate the effect with auto-hold.
    The hill start assist governs the starting torque when pulling away on an uphill incline and interacts with the hydraulic brake assist and the transmission control to prevent the vehicle from rolling backwards by applying the brakes. This makes controlling the vehicle during hill starts simple and convenient for the driver. So there is no need to worry about the vehicle rolling backwards or the engine stalling.

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