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PCS, LDA malfunction question

Discussion in '3rd Gen. Tacomas (2016-2023)' started by Skitch, Jun 13, 2024.

  1. Jun 13, 2024 at 5:49 PM
    #1
    Skitch

    Skitch [OP] New Member

    Joined:
    Jun 13, 2024
    Member:
    #451456
    Messages:
    2
    Vehicle:
    2018 Tacoma SR5
    My 2018 has recently started throwing a pre-collision system (PCS) malfunction and Lane Departure Assist (LDA) malfunction at the same time.

    I've cleaned the window in front of the LDA and cleaned the emblem in front of the PCS.
    I haven't done any after market stuff to it.

    I'm assuming it's a fuse issue but I can't find any information about which fuse handles these systems. I think it's a 7.5 fuse but I'm not 100% on that. I've pulled a bunch of fuses and haven't found a visually bad one yet, is it possible for a fuse to go bad without it blowing?

    Any help would be much appreciated.
    Thanks
     
  2. Jun 13, 2024 at 5:52 PM
    #2
    Bishop84

    Bishop84 Well-Known Member

    Joined:
    Dec 17, 2015
    Member:
    #172494
    Messages:
    11,766
    Gender:
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    It's basically guessing until its scanned and checked for what code it is.

    Rarely a fuse, usually its a calibration issue, cracked glass, or a heater grid on the windshield itself.

    I'm not aware of any readily available scanners that can read codes from the PCS systems, most aftermarket can only do the big modules like engine, abs, srs etc.
     
    musicisevil likes this.
  3. Jun 15, 2024 at 9:57 AM
    #3
    Skitch

    Skitch [OP] New Member

    Joined:
    Jun 13, 2024
    Member:
    #451456
    Messages:
    2
    Vehicle:
    2018 Tacoma SR5
    Thanks for the reply. I was hoping it would be something simple that was common to both systems since they went out at the same time, like a fuse. But I know very little about car electrical systems. Both the glass and emblem are clean and in very good condition. Frustrating.

    I guess my next step is taking it to a dealer. I'm hoping I can get it fixed for free by referencing the recall I've been reading about online related to the PCS system in some 2018 Tacomas.
     
    Last edited: Jun 15, 2024

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