www.tdiclub.com

Economy - Longevity - Performance
The #1 Source of TDI Information on the Web!
Forums Articles Links Meets
Orders TDI Club Cards TDIFest 2016 Gone, but not forgotten VAG-Com List Unit Conversions TDIClub Chat Thank You




Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > Audi SUVs (Q7 & Q5)

Audi SUVs (Q7 & Q5) Discussions area for Audi Q7 and Q5 TDI (2009+ in Canada & the US).

Reply
 
Thread Tools
Old July 28th, 2017, 04:48   #1
ajskier
Member
 
Join Date: Apr 2006
Location: Columbus, Ohio
Default Aftermarket Tow Hitch on a Q7

Hello All,

I hope everyone is doing well today. I have a quick question for you all. I am looking at purchase a Q7 TDI without a hitch on it, but I need a hitch to pull my boat, so I was going to have one added after I purchased the vehicle. However I wanted to know will this change the max tow capacity? Also, is there anything else that I need to look at adding since this car does not have the factory tow package? My boat with trailer weighs a little over 3k.

Finally just out of curiosity, why is the tow ratings so much different between the Q7 and the Touareg? My Touarge which is going away is rated for over 7K.

Any information that you all can throw my way is greatly appreciated.

Have a good day,

Aaron
ajskier is offline   Reply With Quote
Old July 28th, 2017, 12:26   #2
oilhammer
Certified Volkswagen Nut Vendor
 
oilhammer's Avatar
 
Join Date: Dec 2001
Location: St Louis
Fuel Economy: fantastic
Default

Get the kit from the dealer. It will come with the hitch, all the interface wiring, the trailer control module, and it will plug right in. Then you will need to do some coding changes so the other modules play nice with the trailer module.

This is great, too, because then your car will know when a trailer is attached, and can modify things like shift points, suspension settings, etc. as well as make the ABS/ESP work differently. Some even allow for trailer sway control, which is a neat feature.

Dealer can order you everything by VIN, there are different options depending on what equipment it already has.

Or, you can look here:

https://www.ecstuning.com/b-genuine-...AaAizSEALw_wcB

Aftermarket often has an OEM type hitch available, you just need to make certain that it fits your car. The one pictured above is the type I have installed. Fit perfect, work great. Not cutting, no drilling, no headaches.
__________________
oilhammer
www.cardocautomotive.com

Last edited by oilhammer; July 28th, 2017 at 12:32.
oilhammer is offline   Reply With Quote
Old July 29th, 2017, 21:27   #3
willyworm
Member
 
Join Date: Mar 2009
Location: On the road, SC
TDI(s): 2003 Jetta
Default

I don't have a clear answer on the last question but the only things I can imagine that would provide the higher towing capacity to the Q7 would be gearing and longer wheelbase.

Sent from my SM-G930V using Tapatalk
willyworm is offline   Reply With Quote
Old July 29th, 2017, 22:04   #4
nayr
Veteran Member
 
nayr's Avatar
 
Join Date: Mar 2013
Location: Denver, CO
TDI(s): 2014 Audi Q7
Default

5500lbs tow capacity installed after the fact, its 6600 if its port installed.. factory installed from port basically includes a bigger fan and shroud, everything else is same as OEM kit as TDI already comes with bigger radiator that the gassers only got if they had tow package.. 6600lbs after the fact should be okay for short distances or flatland.. potential to overheat taking that much weight across a few mountain ranges.

definitely get the OEM kit, you'll need access to a vag-com to recode the tow module from ROW to North America, and to enable tow mode for abs/backup camera/blind spot monitoring/parking sensors/adaptive cruise/air suspension.

Q7 hitch is mounted further away from rear axle than a T-regg, this is why its not rated to 7700lbs.. more leverage.. Installing an electronic brake controller is the same as the T-Regg, it has wiring already under the dash next to the OBD2 port.
__________________
2014 Audi Q7 Prestige, Air Suspension, Tech Pkg, Tow Pkg, Cold & Hot Weather Pkg - #dieselgate upgrade
2013 Golf 6MT 5 Door, Tech Pkg, Malone Stg2, Westfallia Hitch, Frost Heater, Escort Passport, Tow Bags, Runflats - (RIP: March 2013 - April 2017)
1975 Westfallia 4MT - ALH Conversion in progress.

Last edited by nayr; July 29th, 2017 at 22:15.
nayr is offline   Reply With Quote
Old August 22nd, 2017, 09:51   #5
ajskier
Member
 
Join Date: Apr 2006
Location: Columbus, Ohio
Default

Thank you all for the information. I ended up finding a Q7 with the tow package already installed.

However, I noticed that where I would plug in the trailer on my Touareg, there is a black plate with a plug in the back of it. Would I just need this...https://www.ecstuning.com/b-genuine-...or/4l0055305u/ or can I just take the plug harness off my Touareg and use it since that car is going back in the next 2 days.

Thanks for all of your help,

AJ
ajskier is offline   Reply With Quote
Old August 22nd, 2017, 10:30   #6
compu_85
Gadget Guy
 
compu_85's Avatar
 
Join Date: Sep 2003
Location: Springfield VA
Default

In addition to that plug, you need to get the trailer light control module Oilhammer mentioned above. Even if you get a used one (match the part number). When you hook up the trailer it will tell the truck to recalibrate the ABS, ESP, transmission, light control, alarm system...

-J
__________________
Present:
2013 Fiat 500e. 18,000 miles. Almost 100 miles per charge!
2012 Passat SE TDI DSG. 112,000 miles. Factory Alarm, LED tails, Memory Seat, HIDs 38/48 MPG. Buy it from us!
2004 Touareg V10 TDI. 165,000 miles.
99.5 Jetta "GLX" TDI. 310,000 miles. Half way there!!! Power Memory Seats, HIDs 11mm pump, BV39 Turbo, RCIII 36/47 MPG.
1991 Mercedes 350SDL 230,000 miles, 70,000 on engine. 18/27 MPG.
Past:
1988 Audi 5000S Quattro, 1992 Jetta ECOdiesel, 1991 Jetta ECOdiesel.

Check out the official TDIClub Chat Room!
Quote:
Originally Posted by BRUSSELS BELGIAN View Post
Maybe I should pay MYSELF to do bad work on my car!
compu_85 is offline   Reply With Quote
Old August 22nd, 2017, 12:26   #7
oilhammer
Certified Volkswagen Nut Vendor
 
oilhammer's Avatar
 
Join Date: Dec 2001
Location: St Louis
Fuel Economy: fantastic
Default

It is funny, we had a guy who refused to pay for a proper setup for his T'reg. Then came in complaining that his rear sensors were going bananas whenever he hooked a trailer up. Well, durr.... the car constantly thinks someone is right on your bumper tailgating you! Sad thing is, Uhaul BUTCHERED that brand new SUV too. Chopped and hacked it all up. Shame.
__________________
oilhammer
www.cardocautomotive.com
oilhammer is offline   Reply With Quote
Old August 23rd, 2017, 04:49   #8
compu_85
Gadget Guy
 
compu_85's Avatar
 
Join Date: Sep 2003
Location: Springfield VA
Default

That is a shame Deactivating the rear parking sensors is something I forgot the trailer module did too!

-J
compu_85 is offline   Reply With Quote
Old August 23rd, 2017, 04:54   #9
oilhammer
Certified Volkswagen Nut Vendor
 
oilhammer's Avatar
 
Join Date: Dec 2001
Location: St Louis
Fuel Economy: fantastic
Default

I just wish I could find the same know how and support for MB as we enjoy for VAG stuff. The trailer wire harness I got for my Sprinter is HUGE, and I have no instructions whatsoever.
__________________
oilhammer
www.cardocautomotive.com
oilhammer is offline   Reply With Quote
Old August 26th, 2017, 21:56   #10
nayr
Veteran Member
 
nayr's Avatar
 
Join Date: Mar 2013
Location: Denver, CO
TDI(s): 2014 Audi Q7
Default

The OE trailer module does alot of stuff, one thing I noticed is the hatch release button on the drivers side door wont open it with a trailer plugged in.. just unlocks it, it presumes your hatch may impact your trailer or bike rack if nobody is back there to stop it.

It also tweaks the adaptive cruise control to give you more room and be less aggressive, among disabling blind spot monitoring, parking sensors, locking air suspension so hitch height remains steady, traction control, etc..
__________________
2014 Audi Q7 Prestige, Air Suspension, Tech Pkg, Tow Pkg, Cold & Hot Weather Pkg - #dieselgate upgrade
2013 Golf 6MT 5 Door, Tech Pkg, Malone Stg2, Westfallia Hitch, Frost Heater, Escort Passport, Tow Bags, Runflats - (RIP: March 2013 - April 2017)
1975 Westfallia 4MT - ALH Conversion in progress.
nayr is offline   Reply With Quote
Old August 29th, 2017, 08:52   #11
ajskier
Member
 
Join Date: Apr 2006
Location: Columbus, Ohio
Default

Quote:
Originally Posted by compu_85 View Post
In addition to that plug, you need to get the trailer light control module Oilhammer mentioned above. Even if you get a used one (match the part number). When you hook up the trailer it will tell the truck to recalibrate the ABS, ESP, transmission, light control, alarm system...

-J
J, thank you for the info. I was under the impression that the trailer light control module was part of the factory tow package is that not correct? The reason that I ask is when I took the plug off the touareg and plugged it into the Q7 and hooked my trailer up, the car immediately noticed that I had a trailer light out. Also, when I got the trailer all hooked up to the car the parking sensors did not go off like I was going to hit something.

I am sorry for so many questions, I just want to make sure that I have everything a 100% correct. It amazes me that with the Touareg with the tow package I didn't have to do anything and with the Q7 it seems like a lot of stuff that the factory should have included is not there and you have to buy after the fact to set the car up right to tow.

Again, I appreciate everyone's help and advice.

Take care,
AJ
ajskier is offline   Reply With Quote
Old August 29th, 2017, 08:55   #12
oilhammer
Certified Volkswagen Nut Vendor
 
oilhammer's Avatar
 
Join Date: Dec 2001
Location: St Louis
Fuel Economy: fantastic
Default

I think it depends on how the vehicle was configured when built. Some have it, some do not.
__________________
oilhammer
www.cardocautomotive.com
oilhammer is offline   Reply With Quote
Old August 29th, 2017, 09:54   #13
ajskier
Member
 
Join Date: Apr 2006
Location: Columbus, Ohio
Default

Quote:
Originally Posted by oilhammer View Post
I think it depends on how the vehicle was configured when built. Some have it, some do not.
Thank you sir. Where would I look to see if the trailer light control module is there?
ajskier is offline   Reply With Quote
Old August 29th, 2017, 10:25   #14
compu_85
Gadget Guy
 
compu_85's Avatar
 
Join Date: Sep 2003
Location: Springfield VA
Default

VCDS Open up Auto Scan and pull the gateway installation list.

On the Touareg the trailer control module lives in the right side of the cargo area, near the radio amplifier and CD changer.
__________________
Present:
2013 Fiat 500e. 18,000 miles. Almost 100 miles per charge!
2012 Passat SE TDI DSG. 112,000 miles. Factory Alarm, LED tails, Memory Seat, HIDs 38/48 MPG. Buy it from us!
2004 Touareg V10 TDI. 165,000 miles.
99.5 Jetta "GLX" TDI. 310,000 miles. Half way there!!! Power Memory Seats, HIDs 11mm pump, BV39 Turbo, RCIII 36/47 MPG.
1991 Mercedes 350SDL 230,000 miles, 70,000 on engine. 18/27 MPG.
Past:
1988 Audi 5000S Quattro, 1992 Jetta ECOdiesel, 1991 Jetta ECOdiesel.

Check out the official TDIClub Chat Room!
Quote:
Originally Posted by BRUSSELS BELGIAN View Post
Maybe I should pay MYSELF to do bad work on my car!
compu_85 is offline   Reply With Quote
Old August 29th, 2017, 12:46   #15
oilhammer
Certified Volkswagen Nut Vendor
 
oilhammer's Avatar
 
Join Date: Dec 2001
Location: St Louis
Fuel Economy: fantastic
Default

And when you install the Trailer Control Module on a car that did not originally have it, you may have to do a CAN reconfiguring, I forget the exact sequence, VCDS has prompts, but it tells the CAN Gateway to go and recheck for any and all new modules. It then will show up in the CAN Gateway installation list.

It seems some cars will tag a new module on their own, others need to be told to "go look" for a new one. It is akin to the "scan for new hardware" deal in Windows, except again newer Windows systems usually know as soon as something new is plugged in anyway.

The VAG kit usually has other module recoding that needs to be performed too in the install directions. I had one recently that had a DTC in the rear park sensors, which I knew was from a minor collision and the sensor was on order. It would not let me recode anything with that DTC there. I had to wait until the sensor came in (bumper cover was already replaced/refinished), clear the DTC, then I could recode everything and make it play nice.
__________________
oilhammer
www.cardocautomotive.com
oilhammer is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
2015 Q7 TDI Trailer Hitch recommendation sought markiemark Audi SUVs (Q7 & Q5) 6 April 5th, 2015 05:30
Q7 TDI Non Factory Trailer Hitch akboy Audi SUVs (Q7 & Q5) 0 March 5th, 2014 15:22
Tow Package TDI 2010 Q7 question nile Audi SUVs (Q7 & Q5) 11 December 31st, 2012 07:51
What is the best tow hitch to get? CALL911 VW MKIV-A4 TDIs (VE and PD) 52 October 1st, 2011 17:19
What tow hitch to use? tyler_01_TDi TDI 101 0 August 17th, 2009 07:21


All times are GMT -7. The time now is 02:44.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright - TDIClub Online LTD - 2017
Contact Us | Privacy Statement | Forum Rules | Disclaimer
TDIClub Online Ltd (TDIClub.com) is not affiliated with the VWoA or VWAG and is supported by contributions from viewers like you.
1996 - 2017, All Rights Reserved
Page generated in 0.17399 seconds with 13 queries
[Output: 135.88 Kb. compressed to 114.08 Kb. by saving 21.80 Kb. (16.05%)]