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Discussion Starter · #1 ·
I have a 2004 9-5 Estate and need to get a towbar fitted....

Easy you might say .................Suppose so apart from a small problem...

I have heard conflicting reports of if a fixed towbar will interfere with my park assist....

Anyone here have any info that could assist me ?

The difference in price from a fixed to a detachable is £75 :eek:


Any help gratefully received..
 

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I can't imagine the towbar it's self would pose a problem, but the fact that you'd have a trailer behind you would cause your park assist to go nuts all the time.

I don't have park assist, so I don't know, but is it possible to turn it off while towing?
 

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Surely the Park Assist is not activated until reverse gear is selected. I presume you are not towing in reverse, so that shouldn't be a problem!
 

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drutter said:
Surely the Park Assist is not activated until reverse gear is selected. I presume you are not towing in reverse, so that shouldn't be a problem!
Oh... yeah... good call... :roll:
 

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Discussion Starter · #5 ·
Not worried about it going off when reversing as I dont tend to reverse all that often..

Have to reverse into garden with caravan on but thats about it really...

Was more thinking about the towball interfering with the PA when not towing..

Thanks for replying :D
 

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Why don't you make a 'mock tow bar' with maybe an empty coke bottle and a roll of duck tape, to resemble the size of a fixed tow bar.

Select reverse, and see!
 

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Discussion Starter · #7 ·
drutter said:
Why don't you make a 'mock tow bar' with maybe an empty coke bottle and a roll of duck tape, to resemble the size of a fixed tow bar.

Select reverse, and see!

Thats always an option but its not a very exact method really...
Only have to be slightly out with positioning and the results are meaningless :cry:

Was hoping to hear from someone who had a bar fitted to a 9-5 with PA
 

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Drive a work Passat with a large Swan-neck towbar and PA and there's no problem so would hope the same for a 9-5. You do have to remember to stop short of the continuous beep due to the extra length though.
 

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Surely the guys at Saab thought about this and wired the trailer socket such that it disables the park assist? I'll have a look at the wiring diagram later on.
 

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I have a factory fitted towbar ....and it does not interfere with the park assist, as long as u dont tow anything. If i revese with a caravan the park assist give one long biiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiip very annoying. But I dont tow a caravan that often...and i reverse with a caravan even less...so for me it is not a problem
 

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If the car has 'piggy back' towbar wiring that's essentially invisible to the car then the sensors may well pick up the towball; most modern cars have a learning ability and if something is always there the device can learn to ignore it.
If you have full CAN-bus and the wiring is a dedicated kit then with other car switching [such as the C2 function change for bulb failure notice] other parameters such as disabling the reverse sensors when the trailer socket is plugged in can be incorporated upon installation.

I would like to think that Saab would be at least as sophisticated as the Skoda Octavia; when the CAN-bus changes are made for towing and the sockets are made active, not only does the bulb failure tell tail get incorporated into the standard display [no manky buzzers] but the reversing sensors are turned off and the ESP package changes subtly and becomes TSP trailer stability system.
 

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Discussion Starter · #13 ·
ragtopcav said:
If the car has 'piggy back' towbar wiring that's essentially invisible to the car then the sensors may well pick up the towball; most modern cars have a learning ability and if something is always there the device can learn to ignore it.
If you have full CAN-bus and the wiring is a dedicated kit then with other car switching [such as the C2 function change for bulb failure notice] other parameters such as disabling the reverse sensors when the trailer socket is plugged in can be incorporated upon installation.

I would like to think that Saab would be at least as sophisticated as the Skoda Octavia; when the CAN-bus changes are made for towing and the sockets are made active, not only does the bulb failure tell tail get incorporated into the standard display [no manky buzzers] but the reversing sensors are turned off and the ESP package changes subtly and becomes TSP trailer stability system.


I suspect your talking along the lines of a factory/dealer fitted towbar but the one I have wont be fitted by a dealer but by another company...

I will phone a dealer and ask for a price but I suspect it will be prohibitive really....


Thanks everyone for your replys :D
 

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Vector-Sport said:
I suspect your talking along the lines of a factory/dealer fitted towbar but the one I have wont be fitted by a dealer but by another company
I saw the Skoda job being done by a Witter fitter [I bet he hates being called that :lol: ] but when you go to an independent they'll either have an arrangement with the local franchise or the software themselves to talk to the CAN-bus. It is often the case though [I know this because of my new job] that a good towbar specialist will know what is involved better than the franchise staff. A good case is the new Mondeo and pin 9 of the new electric plug.

Oh, if you are going to have a caravan from late 2008 they will come fitted with the 13 pin plug, just to help you decide which plugs to go for.
 

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Discussion Starter · #15 ·
ragtopcav said:
Oh, if you are going to have a caravan from late 2008 they will come fitted with the 13 pin plug, just to help you decide which plugs to go for.

Already got a caravan......Had it for 3 years....

And I always have twin electrics fitted so I can charge the battery and run the fridge while driving..
 

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Vector-Sport said:
Already got a caravan......Had it for 3 years....

And I always have twin electrics fitted so I can charge the battery and run the fridge while driving..
If you change it in the near future for a new caravan then it will come with a 13 pin instead of the twin black and grey plugs. I'm just helping you think ahead, the single plug carries all the functions of the twin and it is more reliable too; if your car is equipped with a Saab dedicated kit [even if it is fitted by an independent] it may well already come with a 13pin plug.

I will be getting a towbar soon and I'm not sure what sort of socket to have. Though my current 'van is twin lead If I change it from 2008 then that will have the single 13 plug; the single plug is vastly superior to the traditional system so I may even be tempted to change the 'vans plugs over and just have the one.

Thankfully if you find the towcar with one plug and the caravan/trailer with the other sort adaptors are readily available for not too much money.

And watch out, there's 2 standards of 13 pin plug, the ISO type that has been taken on by almost all German and Scandinavia car builders and the West plug that is more common with French and Italian cars. The caravan industry in the UK [as decided by the NCC] will go to the ISO plug mid way through 2008 and the traditional black and grey plugs will become obsolete thereafter.
 

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Late model park assist (reverse sensor) uses four sensors...

early types (maybe not Saab) used three - one on each corner and one.... in the middle! the tow bar obscured it and gave false readings!

Tow bars easy to fit as long as you have the right tools, i know as i used to be a fitter long ago!
 

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Jeese.. you guys are making something so easy difficult. ( Over thinking maybe) The Park Assist is OFF when you are not in reverse ( no power ) once you put it into reverse it energizes the sytem and it starts to detect objects behind. It is not detecting things behind you at any other time...
 

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Jssaab said:
Jeese.. you guys are making something so easy difficult. ( Over thinking maybe) The Park Assist is OFF when you are not in reverse ( no power ) once you put it into reverse it energizes the sytem and it starts to detect objects behind. It is not detecting things behind you at any other time...
Park assist is bloody annoying enough when it sounds for the trailer attached, some systems can also detect just the fitted bar!! So having it disabled when hitched and the ability to ignore a fitted towbar is a cool feature.
 

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Discussion Starter · #20 ·
Jssaab said:
Jeese.. you guys are making something so easy difficult. ( Over thinking maybe) The Park Assist is OFF when you are not in reverse ( no power ) once you put it into reverse it energizes the sytem and it starts to detect objects behind. It is not detecting things behind you at any other time...


So when nothing is coupled to the towbar to have a constant beeeeeeeeeeep from the park assist when reversing is a right royal pain in the butt not to mention it renders a usefull feature useless so I hardly think its making something difficult thats so easy :nono;
 
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