Recommended Plug and Play Brake Controller and Adapter for a 2015 Mercedes GL350
Updated 09/08/2025 | Published 06/09/2025
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Question:
Hi, i have a 2015 Mercedes GL350 looking to buy the Curt trailer brake controller. Can you tell me if it is plug and play or does it require an adapter to connect to my car?
asked by: Lester L
Expert Reply:
Hey Lester. Does your 2015 Mercedes GL350 have the factory tow package? If so the Curt Discovery NEXT Trailer Brake Controller w/ Custom Harness item # C84GJ comes with everything you need to have a plug and play install.
If you do not have the factory tow package you'll need the Curt Discovery NEXT Trailer Brake Controller -item # C84VV and the Universal Wiring Adapter for Curt Trailer Brake Controllers item # C51515.
The brake controller harness will be located underneath the dash. You'll want to pull back the carpet behind the brake pedal to expose the connector.
Which Curt brake controller were you look at and does your Mercedes have the factory tow package? You can add this information and any other questions you have where it says Reply to Jerred H and I'll be happy to answer them.
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Product Page this Question was Asked From
Tekonsha Prodigy RF Wireless Brake Controller - Trailer Mount w Remote - 1 to 3 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Plug-In
- Remote Control
- Trailer-Mount
- LED Display
- Multiple Trailers
- Tekonsha
more information >
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Jerred H.
9/8/2025
Hey Lester, did you find out if your Mercedes has the factory tow package? I'm eager to help you get the right setup for your trailer brake controller.