2019 VNL Wiper problem

Discussion in 'Volvo Forum' started by Nascar_Perry, Feb 8, 2019.

  1. Olpnm

    Olpnm Bobtail Member

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    Aug 26, 2019
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    I have a 2019 860, same or very similar issue on wipers, originally they were going to change controller, but they found a service bulletin that advised a jumper harness, part was ordered 2 months ago, still waiting
     
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  2. Mudman78

    Mudman78 Light Load Member

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    May 23, 2016
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    Intermittent wiper control is built into the wiper motor. It needs a new wiper motor. Had two 2019's do it already. Probably a bad batch of motors on the assembly line.
     
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  3. Olpnm

    Olpnm Bobtail Member

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    3
    Aug 26, 2019
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    Volvo part # is 23522546, it's a wire harness with a resistor inline, goes between existing harness and wiper motor, 90 bucks, fixed mine
     
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  4. SergeyN

    SergeyN Bobtail Member

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    Apr 18, 2020
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    the harness does not solve the problem completely, better immediately replace the motor assembly
    and I also want to advise - the new Volvo is very sensitive to power surges and weak batteries
     
  5. Nascar_Perry

    Nascar_Perry Bobtail Member

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    May 18, 2016
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    Well to those saying its the motor, I can say no.

    First, you can hear the relay in the dash click when intermittent goes up and down. There are two same relays there. If I swap their places, the problem stops for a little bit then happens again.

    Ive had the motor replaced three times. The third time, it was replaced at the end of January, problem happened again in mid February and has not let up when the wipers are being thoroughly used. Confirmed it is a brand new motor that was placed in January. I am highly suspect of the relays or even as others put it, the harness or resistor.

    Volvo has even acknowledged that there were problems with the relays in previous trucks when they first thought it was the motor.

    It's like diagnosing an illness, you start with the most suspected area first, this case one would think that the motor would be the problem as it is actually moving the wipers. This hasn't fixed it, so now you have to continue looking until you find what is really doing it.
     
    KB3MMX Thanks this.
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