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Discussion Starter · #1 ·
Just picked up a 2006 2.5T and am planning to pull a small trailer with it. I installed the hidden hitch last weekend and planning to put on the OEM wiring harness. Got the trailer module and wiring harness. <p>Question is do i need to get a software update for the lights to work properly?<p>thanks
 

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Re: software update for trailer wiring (vandermj)

I have an 07 XC-90 and just put a Hidden hitch on it myself. I then purchase the wiring ( without electric brake system ) from Volvo Dealer. They said there would be 25 dollar charge for a software update to the computer to make it work.<p>ron
 

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Re: software update for trailer wiring (vandermj)

<p>Our 2005 didnt need any updates..<p>Hook it all up, if it works then your done. If it doesnt work, get an update.
 
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