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Problem with Reverse Sensors with tow bar fitted

Discussion in 'VZ Holden Commodore (2004 - 2006)' started by junka, Feb 11, 2006.

  1. junka

    junka MUZZA

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    I have one of those heavy duty removable tow bars fitted to my car. When I put the car in reverse, the reversing sensor system sounds off with a continous tone :ranting: because it is picking up the towbar in close poximity. Is there anyway to stop this, as I still want the reversing system to function with the towbar fitted. According to the VZ vehicle manual it says that the reversing sensor system can be adjusted by the Holden dealer to compenstate for the towbar. Has anyone had this done and what does it involved ?
     
  2. Charg'd

    Charg'd New Member

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    mate if you need to use the sensor to reverse then you shouldnt have a license
     
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  3. Stretchomatic

    Stretchomatic New Member

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    so mcfries ur saying that he should remove something from his car that came stock on it...i can see ur logic there...i think wat hes trying to say is that even when he doesnt need them they r going off, distracting him etc...but i'm sure that ur input is valuable to u...
     
  4. Shounak

    Shounak The Kicking Horse

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    Parking sensors are bloody useful.. Especially when it's a tight reverse and the only thing behind you is a tiny car whose bonnet is lower then the vision of the rear window..

    The side mirrors aren't accurate enough for you to land 2cm away from the car and know 100% that you didn't touch it..

    I love my sensors..
     
  5. Charg'd

    Charg'd New Member

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    sorry it wasnt a personal attack, each to their own, basically i think they should be programmed for these things before leaving holden. ( another holden cant get right ) now the basis of my comment was meant to come across as, if you reply solely on these sense when you reverse then you shouldnt have a license. Shounak/Junka obviously you guys have these systems on your car, how accurate are they? Sorry for the misunderstanding i should have make my post better
     
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  6. clixanup

    clixanup Has Left

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    If you have the proper trailer wiring loom from Holden, the plug socket has a reed switch in it which disables the reversing sensors when you plug your trailer in. I have a dealer fitted towbar and wiring harness, and that's how it works for me.
     
    Last edited: Feb 12, 2006
  7. Doctor Bob

    Doctor Bob Grandpa

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    there is a connector that needs to be used when the towbar is fitted, this should extend the clearence area to allow for the tongue. The correct plug also has a switch in it to disable it completely when the flap on the plug is poen.

    Rob
     
  8. junka

    junka MUZZA

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    Reverse Sensors with tow bar

    My equip is fitted with sensors as standard, and no I don't rely on it soley as it is not 100% reliable.

    If we used the same argument as McFries, then if you have power steering your a weener, as people of yesteryear could parallel park a giant tank without it-I wonder how many of you today could do that ? Hey, I use to own a Magna with the heavist steering on the planet and got by, you just develop stronger arm muscles and turn quickly :driving:
    But, now days it is hard not to get a car without one. In the end, all these advancements make things a little easier, so enbrace them. Heck, I wonder sometimes how I even survived with power steering now that I own a Commodore.

    With the way car boots are getting bigger making it harder to see want is behind you, even the best reversing skills will be useless unless you have ESP.
    Face it, reverse sensors, and reversing camera in rear view mirrors will become standard sooner or later, particularly with the number of small kids getting run over lately.

    Reverse sensors are great because my wife, is lously at reversing and has made a excellent job at panel beating her cars rear end :ranting:

    Now, my tow bar is not a genuine Holden, as they charge an arm and a leg for it.

    So has anyone had this problem with a non-gen tow bar.
     
  9. clixanup

    clixanup Has Left

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    Get the Holden wiring loom & socket installed, and then it will work properly.

    I normally use the tow bar as a bargaining chip. ie: Get them to agree to a certain price with towbar & window tint... It doesn't work out more expensive that way at all.
     
  10. wack

    wack Guest

    This is out of my manual.....VZ AWD Adventra and cross 8 handbook.

    Disabling the RPA
    On some occasions you may wish to turn the RPA off to prevent the constant warning tones while reversing,such as when a bicycle rack is fitted to the tow bar (a bycycle may be recoginsed as a close object by the RPA.)To turn the RPA on/off,proced as follows:
    1.Ensure that the engine is turned off.
    2.Open the tailgate and carefully remove the right-hand light trim cover with a flate blade screwdriver.
    3.Locate the black harness conector mid way along the RPA harness.
    . RPA off - disconnect the black harness connector.
    . RPA on - connect the black harness connector.
    4.Install the rear light trim cover and close tailgate

    Tow Bar
    Same procedure as above
    . Tow bar fitted - Disconnect the white harness conector.
    . Tow bar removed - Connect the white harness connector

    I use the Disabling the RPA method when I attach my tow bar.And its not a genuine one its off my old cruiser,
    I know this is in a wagon but it might be worth a look?

    steve
     
  11. crewiess

    crewiess Guest

    Whats involved - book it in, take it down and then stand over them with a lump of 4*2 to make sure they do the job.;) ;) ;)

    Seriously could not live without the parking sensors on the crewie especially when the racks on the lid are loaded up!
     
  12. calaiscruise

    calaiscruise New Member

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    Muzza,

    I also had the same problem with my reversing sensors going bonkas, if I hook up my trailer and reverse. Mine is a genuine holden heavy duty hitch & reciever, the manual says that it automatically disables if a trailer plug is inserted (I wondered how, until ready someone's explanation earlier, using a read switch in the plug).

    It seems my plug "reed switch" might be faulty (i checked my factory installed "Lumen" brand :my: trailer plug, and it does have a tiny sqaure magnet inside the lid, which suggest the reed switch activates when the lid moves), I will have to fault find it. There is an extra connector (near the tailight) labelled "VY trailer redd switch", so it must have the ability.

    I normally remove my hitch from the receiver, and only insert it when towing, that solves it for non-trailer driving.

    btw. whilst I agree with others that we should never rely on RPA (reverse park assist), it's an extra backup to hitting something, and as (sadly) NRMA recently noted the VY-VZ commodores rating worse than some 4WD for rear visions, I'm glad my VYII has it. I even want to install a reversing camera ... soon it will probably be law on new cars anyway.
     
  13. ternel

    ternel Guest

    :hit: In your owners manual it says to remove the carpet in the boot (right side) there's two single wire connectors, one white and one black. I think from memory that you need to disconnect the white wire when you've got a hitch attached.. When the black wire is disconnected it turns off the park assist completely.
     
  14. junka

    junka MUZZA

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    Reverse Sensors with tow bar fitted

    The latest with my tow bar problem is that I removed the third party trailer electrical harness and replaced it with the genuine Holden one. Now when a trailer is connected, the reverse sensors are turned off. According to the installation instructions for the harness, the disconnection of the white connector in the boot will increase the continous reverse tone distance from 30 to 45 cm to clear the tow bar. However, my after market tow bar is 1 cm longer than the genuine Holden one, and as such just trips the reverse sensors. So I was faced with replacing the tow bar with a genuine Holden or buy another tow bar which is shorter, cost about $90. Then, I thought all I have to do is absorb the sound waves at one point, ie. at the tow bar ball. So I got a plastic ball cover and glued some sound asorbing material I got from Jaycar Electronics over it. Hey presto, it works ! The reverse sensors still work as advertised, except they don't see the ball. A cheap solution to a problem and still a lot cheaper than a genuine Holden tow bar all up :w00t:

    I have included a picture.
     

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  15. theautomationguy

    theautomationguy New Member

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    The ultrasonic field behind reversing sensors is a balloon shape. If you can mount the sensor a bit lower or a bit further back this should solve your problem. You cannot mount them too low as it will squark by detecting the road. I fitted sensors to my aftermarket Chrome bumper/ towbar & ran into the same problems. I find them a bit useless as they only detect up to 300mm them they go on full squawk & 0 distance registers. I can get the thing to 300mm without sensors. Was hoping that they would measure down to 25mm - 50mm when you are squeezing it in. Having a Cross 6 ute does not give good rear vision. Anyone know of reversing detectors that measure smaller distances.
     
  16. holdenvtman1123

    holdenvtman1123 Improvise Adapt Overcome

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    due to my towbar tongue size enabling depth from 30-40cm does not work. here is the wiring diagram for a 5speed automatic. i removed the Dark green and onrage wires from the processor hoping this disabled the two middle sensors. this made the error signal and didnt help. perhaps someone else knows more. failing this i disconnect the black harness connector and disable system all together or remove the towball tongue.any thoughts?
     
  17. holdenvtman1123

    holdenvtman1123 Improvise Adapt Overcome

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    update. i was unable to overcome the issue with the RPS. The tow-ball sticks out way to far. i disconnected the black connector and disabled the system. i also had an issue with the speaker for the system , while i was putting up with continuous beep while reversing, i was experiencing a high pitched intermittent noise while driving. after disabling the RPS that noise went away and hasn't returned.
     
  18. Not_An_Abba_Fan

    Not_An_Abba_Fan Exhaust Guru

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    Woah....epic thread dig is epic.
     

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