The ones with one touch operation just have a circuit that monitors the current the motor is taking, when it sees a sudden increase in current it knows the window has hit the top or bottom stops and cuts off the power.
It uses the same circuit to detect if there is an obstruction.

Still no limit switches.

Jim


On 09/12/2015 18:19, Susan and Martin Scott wrote:
I'm not familiar with the ones used on the Quantum (I have simple windee roundee ones) but on ones where the button is just pressed and released and the window carries on going there must surely be a limit switch?
Martin

    ----- Original Message -----
    *From:* Jim Hearne <mailto:j...@quantums.info>
    *To:* quantumowners@googlegroups.com
    <mailto:quantumowners@googlegroups.com>
    *Sent:* Wednesday, December 09, 2015 4:59 PM
    *Subject:* Re: [Quantum Owners] Electric Window Goes Down But Not Up

    No, there are no limit switches.
    To be honest i’ve never come across a car with electric windows
    that does use limit switches.
    They all rely on a mechanical stop and sometimes a thermal fuse to
    cover somebody holding there finger on the switch.
    Jim
    *From:* Mark Cleminson <mailto:mrclemin...@gmail.com>
    *Sent:* Wednesday, December 9, 2015 4:30 PM
    *To:* quantumown...@googlegroups..com
    <mailto:quantumown...@googlegroups..com>
    *Subject:* Re: [Quantum Owners] Electric Window Goes Down But Not Up

    There must be limit switches in the circuit to stop the window
    either going too far up or down. If the upper limit switch is
    sticking it would prevent the window raising.

    Mark

    On 9 Dec 2015 15:17, "Chris" <chris.quan...@btinternet.com
    <mailto:chris.quan...@btinternet.com>> wrote:

        Lift off the rubber gear lever gaiter, if you have long
        fingers you can then grope around inside the centre console
        and push out the switches.

        Chris G

        -----Original Message----- From: SMIDG3T
        Sent: Wednesday, December 9, 2015 1:42 PM
        To: Quantum Owners Group
        Subject: Re: [Quantum Owners] Electric Window Goes Down But Not Up

        I tried to lift the centre console but it wouldn't come off!
        Any idea how it's held on? Are you saying once I've
        disconnected I can then pull the window up?

        Thanks.

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