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Backup Sensor Problem

Discussion in '2nd Gen Tundras (2007-2013)' started by skrisa, Sep 21, 2021.

  1. Sep 21, 2021 at 7:04 AM
    #1
    skrisa

    skrisa [OP] New Member

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    Ive replaced all 4 of my sensors on my 07 Tundra bumper and they still dont work. What else could be wrong. Do i need to reset them?
     
  2. Sep 21, 2021 at 7:25 AM
    #2
    frichco228

    frichco228 Valued Member

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    Is the switch for the BSM turned on? Could be a bad switch, break in the wiring somewhere or a fuse could be blown.
     
  3. Sep 21, 2021 at 9:35 AM
    #3
    skrisa

    skrisa [OP] New Member

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    Thanks for your reply. There is no BSM switch in my truck . The bumper sensor switch is turned on. The front sensors work . Ive checked the wiring and all looks good.
     
  4. Sep 21, 2021 at 10:32 AM
    #4
    audiowize

    audiowize New Member

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    Do your reverse lights come on when the truck is in reverse? How about the "R" on the dash?
     
  5. Sep 21, 2021 at 2:16 PM
    #5
    skrisa

    skrisa [OP] New Member

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    Yes the reverse lights come on and so does the R light up on the dash when i put the truck i reverse.
     
  6. Sep 21, 2021 at 2:17 PM
    #6
    audiowize

    audiowize New Member

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    I would follow the wiring harness from the rear sensors to where the plug to the harness that's along the frame. I would unplug that connection and check for corrosion.
     
  7. Sep 21, 2021 at 2:19 PM
    #7
    skrisa

    skrisa [OP] New Member

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    I will check that Thanks
     
  8. Sep 22, 2021 at 12:19 PM
    #8
    skrisa

    skrisa [OP] New Member

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    Thanks for your reply audiowize. Yes i checked the plugin and no corrosion. I followed the wiring to the engine compartment where the wiring ends into a small black box beside the air filter black box. I unplugged each connection and found no corrosion.I checked the fuse box under the hood and nothing is marked Backup sensors. I also checked the inside fusebox and there is a 10amp fuse marked Bkup Lt the fuse was ok. What Next?
     
  9. Sep 22, 2021 at 12:27 PM
    #9
    Saltyhero13

    Saltyhero13 Throbbing Member

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    Are they not activating at all or just not detecting? If its the later you can try and rotate the sensors 90 degrees. In your case I would rotate one at a time before testing.
     
  10. Sep 22, 2021 at 6:38 PM
    #10
    NueveTundra

    NueveTundra Mod list in Bio

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    Exterior: Toytec ultimate 3" lift level, Total Chaos Uniball UCA's, Total Chaos Cam Tab Gusset kit, AcanII smoked headlights, AcanII smoke Tail lights (2.5 gen style), DV8 front winch bumper , Badlands 12k winch with Apex Synthetic, White AUTMATCH Shackles 3/4" D Ring Shackle, Apex Winch shackle, Trail Ridge mirrors ,Icon Rebound Pro 17"x8.5" +25, Cooper Discovery STT Pro 285/70R17, PowerStop drilled n slotted rotors W/Carbon pads, Rigid flood flush mounts rear bumper , WeatherTec rain guards , OEM black side badges , Rigid Amber Radiance Pods. Energy Suspension Red Rack and Pinion Bushings, EAG front mesh Grille, RCI HighLift bed mounts. Rough Country DS2 Steps, A.R.E OverLand Canopy with Ascend basket, Stickers: ToyTec lifts windshield banner, Red Strange Music window sticker(back cab), White Strange Music sticker(back canopy), White Rigid sticker x2 (canopy sides), white Official BigFoot Research Team (Back Canopy) Interior: Alpine double din touch iLX-650 , JL C5-653's (front) JL C1-650x (rear) , JL JX400 4 channel amp , JL JX500 mono amp , 2 JL 12" subs , WeatherTec floor mats, Kenwood F/R Dash Cams, Black steering wheel emblem overlay, Tekonsha P3 Brake controller, ToyTec "Fresh" Scent coilover air freshener, Under the Hood: Koyo all aluminum radiator, Mishimoto red silicon hoses , XS Power 3000 amp battery , LAlectric 300 amp Alternator , K&N replacement filter. Online LED store accessories Fuse/relay box. (Identified) Dirty Deeds 8" Cat back exhaust with DD resonator delete/axel over converted into dump. Coming soon:
    Is there power at pig tails for sensors?
     
  11. Sep 23, 2021 at 10:55 AM
    #11
    skrisa

    skrisa [OP] New Member

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    Thanks for the reply. No there is no power to the pigtails for the sensors. No they r not activating or detecting and no the can't be turned 90 degrees because the wiring is not long enough and the retainer clips have a groove in them that fits into the bumper.So if u force to turn them they will break.I went to the Toyota dealer and they said the sensors need to be programmed into the computer. I've made an appointment and I will be back on This forum when i get my truck back from the dealer to tell u what they did. Thanks again to every body for your help.
     
    Saltyhero13 and NueveTundra like this.
  12. Sep 28, 2021 at 6:16 AM
    #12
    skrisa

    skrisa [OP] New Member

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    Well I got my truck back from the dealer and they couldn't fix the problem but suggested maybe change the clearance sonar ecu $365.00 plus labor. If that doesn't work maybe change the sensors. $1342.00 plus labor. I ordered the ecu and I will change it myself. I will get back here when i change the ecu. Thanks
     
  13. Sep 28, 2021 at 1:18 PM
    #13
    audiowize

    audiowize New Member

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    I think one of your problems is the dealer.
     
    Tundratoofun likes this.
  14. Sep 28, 2021 at 7:24 PM
    #14
    skrisa

    skrisa [OP] New Member

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    yes i agree
     
  15. Oct 2, 2021 at 12:58 PM
    #15
    skrisa

    skrisa [OP] New Member

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    well I changed the computer assembly module #89340-34010 and no change. my problem is when i put the shifter in reverse the 3 bottom lights on the dash blink 5 times and they stay on. im confused what else could be the problem?
     

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