Question re vehicle specific or bypass wiring???

[harrier]

Hi all,
I have sent loads of e-mails out to towbar suppliers/fitters for quotes to supply & fit a westfalia towbar to my Audi A4, prices range from £283.50 to £505.

My question tho is,,,,,,,Does it really make a difference if I go for the bypass wiring rather than the vehicle specific wiring. I sort of assume that the vehicle specific wiring makes the fitters job easier,more or less simply plugging in. I assume???? that the bypass wiring in avoids the bulbfail monitors wrongly picking up bulbfails?

What do the knowledgeable Forum members consider to be the better option!!

H

[martin1810]

If your car has ecu adaptation for towing e.g stability control, abs etc then this can only be programmed in if you use the correct wiring kit. If you use a bypass relay it does what it says. It bypasses the can-bus system so the car doesn't know a tow bar is fitted. This means that any programmable extras available can't be enabled.