Installing A Brake Controller In A 2021 BMW X5 With Factory Tow Package

Question

Question:

I have a 2021 BMW X5 with Factory Tow. It has the 4 pin connector for a brake controller in the drivers foot well. Does eTrailer sell anything that works for me to connect directly into this connector or do I have to pick a Brake Controller of choice and manually wire it into this 4-pin connector? Thanks P.S. When I search brake controllers for the 2021 X5, all say without factory tow but when I search for 2019, I see with factory tow. The generation is the same...

asked by: Joe B

0

Expert Reply:

Hello Joe. The only options we currently have for installing a brake controller on your 2021 BMW X5 with the factory tow package will be to manually wire it to the 4-pin connector, or simply remove the connector and hardwire it.

BMW actually used to put their brake controller plug near the rear of the vehicle on the X5, so for a few years the only plug and play brake control adapter made was like 19 feet long. I believe that Tekonsha will be coming out with an adapter for the BMW X5 eventually, but I really do not have an ETA for that.

expert reply by: Jesse M

0

Joe B.

5/14/2024

Thanks Jesse, good info to keep signaling on the site for all G05 X5 owners

Answer 1

Hello Greg, thanks for reaching out. The Redarc Tow-Pro Link Bluetooth Brake Controller #RED57AR will work great on your 2026 BMW X5 X40i with the factory tow package. We list it for vehicles without the tow package since it comes with a universal…

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Answer 2

You are correct, you should only be getting output when the brake is applied, or the override switch is activated. It sounds like the controller might be bad, but to make sure, you should probably bench test it before tossing it. Use a circuit…

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Answer 3

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 4

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 5

If you just need a 4-pin to 7-pin trailer wiring adapter, then you can use part #C57672. This will plug into the 4-pin trailer connector on your brother's vehicle and give him the 7-pin socket for the trailer. Keep in mind, this will only give…

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Answer 6

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 7

Both the Roadmaster and Blue Ox tow bars are great options. But if it was my decision to make I would go with the Blue Ox Avail part #BX7420 as we have found that the Blue Ox tow bars are a little easier to connect and disconnect from. Also this tow…

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Answer 8

That's a very good question, we tend to be extra cautious and say to use 10 gauge wire because that would be more than enough. When you get into longer trailers that will end up using a lot of wire the heavier gauge wire becomes more necessary.…

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Answer 9

Actually, the P3 now has the upgraded axis accelerometer like the P2. The Tekonsha P3 Trailer Brake Controller #90195, will work with both electric over hydraulic brakes on the trailer as well as electric brakes. It has a menu option on the display…

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Answer 10

We can get you everything you need for towing with your 2017 Toyota Sienna XLE. By plastic shield, I believe you are referring to the appearance panel underneath the Sienna, and that will have to trimmed a bit in each of the hitches available for the…

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Answer 11

The Redarc Tow-Pro Liberty #RED24FR is the way to go over the Elite #RED44FR as you get the nicer functions of the Elite at a lower price. The Elite has the ability to be the more preferred proportional style of controller as well as a time-delayed…

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Answer 12

It sure will Hans and congrats on the new Outback! The Redarc Tow-Pro Link Bluetooth Brake Controller item #RED57AR is going to work great with your 2026 Subaru Outback Wilderness. Since you have the factory tow package, all you'll need to do is…

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Installing A Brake Controller In A 2021 BMW X5 With Factory Tow Package

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