How Does Brake Controller Install in 2025 Volvo XC90 PHEV

Updated 08/15/2025 | Published 07/27/2025

Question:

I have a 2025.5 Volvo XC90 PHEV with the manufacturer tow package. Im at the point where I need to install a proportional brake controller for frequent use of a 2 axle trailer. Since the vehicle came with the tow package, is the wiring already set up to accommodate a brake controller? If so, where might I find the connector? Id like to avoid the RF/bluetooth controllers if at all possible.

asked by: Julie

Expert Reply:

Hey Julie, I did some checking and it looks like your 2025 Volvo XC90 is not pre-wired for a brake controller so you'd have to hardwire in a proportional controller like the P3 part # 90195. So I know you said you have the tow package, what trailer wiring do you have at the rear of the vehicle?

expert reply by: Jameson C

Jameson C.

8/15/2025

Hey Julie, did you get a chance to check what trailer wiring is at the rear of your Volvo? I'm asking because I want to make sure we find the best solution for your brake controller setup.