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  #1705  
Old 07-24-2016, 07:22 PM
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Re: The Towing thread

And if you do go ahead with the work yourself, and you do get to the bit about removing the plastic tub under the spare tyre, be careful with the unplugging of the keyless entry antenna attached to the tub - easy to not notice it is there.
And on reinstall don't forget to plug it in again otherwise you will be back searching this forum for "key not found" messages. From experience, easy to forget in the excitement of closing everything up again.
The harness you get may come with plugs to connect into the wiring loom, my OEM dealer fitted loom (2015 model) simply piggyback plugged into the jeep harness and even provided sockets for connection of brake controller stop signal and the blue trailer brake supply.
John

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  #1706  
Old 08-30-2016, 08:58 PM
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Question Reverse Sensors when towing

Hi guys,

I might be going nuts but I could have sworn that our MY15 GC LTD AUTOMATICALLY DISABLED REVERSE SENSORS when I am backing up my boat.

Now that I have had my boat trailer re-wired professionally and a new LED light system installed on the trailer, I tested it last weekend only to find the reverse alarms screaming at me when backing the trailer down the ramp.

NOTE: I am aware of the 'P-OFF' button now (thanks to the dealer!).

But why did it work for 12 months with the old glow lamp lights, but now with the LED lights the sensors don't turn off automatically anymore?

I have the question with the dealer today and they are scratching their heads at the moment.

No one can say for certain if this is a feature or not. Some suggested there may have been a magnetic switch in the 7-pin flat connector flap that triggered when the flap was open, but I cannot confirm this. The trailer place suggested it could have something to do with the current draw from LED lights being so low.

Can someone with a dealer-fitted tow harness please confirm the behaviour of the rear sensors when backing up their trailer?

Thanks in advance,

Matt

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  #1707  
Old 08-30-2016, 09:16 PM
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Re: Reverse Sensors when towing

Quote:
Originally Posted by mattyd View Post
Hi guys,

I might be going nuts but I could have sworn that our MY15 GC LTD AUTOMATICALLY DISABLED REVERSE SENSORS when I am backing up my boat.

Now that I have had my boat trailer re-wired professionally and a new LED light system installed on the trailer, I tested it last weekend only to find the reverse alarms screaming at me when backing the trailer down the ramp.

NOTE: I am aware of the 'P-OFF' button now (thanks to the dealer!).

But why did it work for 12 months with the old glow lamp lights, but now with the LED lights the sensors don't turn off automatically anymore?

I have the question with the dealer today and they are scratching their heads at the moment.

No one can say for certain if this is a feature or not. Some suggested there may have been a magnetic switch in the 7-pin flat connector flap that triggered when the flap was open, but I cannot confirm this. The trailer place suggested it could have something to do with the current draw from LED lights being so low.

Can someone with a dealer-fitted tow harness please confirm the behaviour of the rear sensors when backing up their trailer?

Thanks in advance,

Matt

Hi Matt,

I've got a dealer fitted towbar on my MY14 Overland. The sensors have never gone off when I've backed my caravan if that is helpful.

Cheers
Ian
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  #1708  
Old 08-30-2016, 09:19 PM
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Re: The Towing thread

Thanks Ian. That helps...at least I am not going insane. They DID used to turn off.

Cheers,

Matt
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  #1709  
Old 08-31-2016, 06:10 PM
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Re: The Towing thread

Our 2015 Laredo has a dealer fitted towbar and with the van on the back or with the bike rack fitted to the tow bar - the sensors go off any time reverse is selected. No auto function.
The van has LED lights and the bike rack has none - the sensors simply detect mass at the rear.
And yes, for me it takes a button press to silence the tone, mostly I just ignore it for the time it takes whatever reverse manoeuvre is happening.
More sophisticated models may have a smarter system.
John
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  #1710  
Old 08-31-2016, 06:14 PM
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Re: The Towing thread

With overheating issues associated with the WK?2 CRD I was wondering if anyone has tried Evans Waterless Coolant?

https://www.evanscoolants.com.au/
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  #1711  
Old 08-31-2016, 07:10 PM
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Re: The Towing thread

Quote:
Originally Posted by John47 View Post
Our 2015 Laredo has a dealer fitted towbar and with the van on the back or with the bike rack fitted to the tow bar - the sensors go off any time reverse is selected. No auto function.
The van has LED lights and the bike rack has none - the sensors simply detect mass at the rear.
And yes, for me it takes a button press to silence the tone, mostly I just ignore it for the time it takes whatever reverse manoeuvre is happening.
More sophisticated models may have a smarter system.
John
Interesting thanks for confirming that John.

Well it goes to show there is mixed opinions on if this feature even exists. I cant imagine there would be too much difference in the sensor behavior between the 2015 Laredo and Limited models when you have towing lights conneced. The bike rack I can understand as the trigger for disabling relates to the electrical trailer plug.

Like you say, easy enough work around by simply pressing the P-off button. But I am still interested in hearing from others. At this stage the dealer wants to run some more tests tomorrow as they can't find anything on it yet in the schematics.

Will post update.

Matt
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  #1712  
Old 08-31-2016, 09:28 PM
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Re: The Towing thread

Matt have you confirmed whether the trailer socket actually has switch connections fitted? If you open it up there will be 9 terminals inside... two extra. You might also be able to ascertain this from the part number, if it's visible.

If not, you can investigate whether the lighting ECU / BCM is somehow current sensing" by loading the trailer light circuits to draw as much current as your old trailer light fixtures. I doubt this arrangement very much, though it is possible.

Did you previously get a warning regarding Park Safe when your trailer was connected???

Cheers,
Steve
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  #1713  
Old 08-31-2016, 10:31 PM
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Re: The Towing thread

My GC doesn't turn off the reverse alarms either when the ancient 6x4 trailer is plugged in or whether the caravan with LED lights is plugged in.

I found his surprising as this stuff, including the reversing camera was turned off on the Captiva when a trailer plug was connected.

My Towner and trailer plug wiring was dealer fitted when I bought it.



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  #1714  
Old 08-31-2016, 10:40 PM
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Re: The Towing thread

Quote:
Originally Posted by 67HR View Post
With overheating issues associated with the WK?2 CRD I was wondering if anyone has tried Evans Waterless Coolant?

https://www.evanscoolants.com.au/
It actually can catch on fire. Few causes in racing circles that have had it happen.
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  #1715  
Old 09-01-2016, 12:30 AM
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Re: The Towing thread

Quote:
Originally Posted by Barboots View Post
Did you previously get a warning regarding Park Safe when your trailer was connected???

Cheers,
Steve
Thanks for the feedback. No Steve, I never saw any warnings with the boat connected.

I am heading to the dealership in the morning so I'll let them take apart the socket if required.

Thanks for the info on the CRD with the box trailer too. It raises more questions about the feature and it's very existence!

Matt
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  #1716  
Old 09-02-2016, 03:29 AM
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Re: Reverse Sensors when towing

Quote:
Originally Posted by mattyd View Post
Hi guys,

I might be going nuts but I could have sworn that our MY15 GC LTD AUTOMATICALLY DISABLED REVERSE SENSORS when I am backing up my boat.

Now that I have had my boat trailer re-wired professionally and a new LED light system installed on the trailer, I tested it last weekend only to find the reverse alarms screaming at me when backing the trailer down the ramp.

NOTE: I am aware of the 'P-OFF' button now (thanks to the dealer!).

But why did it work for 12 months with the old glow lamp lights, but now with the LED lights the sensors don't turn off automatically anymore?
Not withstanding anything others have said, fitting LED's into a system designed for incandescent globes is often problematical. LED's draw little current compared to incandescent globes which can upset some sytems. Perhaps the trailer is not drawing enough current to trigger disabling the reverse sensors. A shunt resistor may help but it kind of defeats the purpose of having LED's. Anyway, what's so bad about the reversing alarm going off? It's mandatory for trucks, albeit outside rather than inside.
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