Pairing Problems with the Tekonsha Prodigy RF Brake Controller and a 2008 BMW X5

Question:

The controller would not pair on the BMW, so your techs suggested using another truck. I did this, and it paired correctly. I moved it back to the BMW and it worked for two short drives. I went out the third time, and it worked until I stopped, then it would not re-pair. I cant find another vehicle to pair with every time I use the trailer! Thoughts?

asked by: Jim B

Expert Reply:

There are very precise steps that you must take to make sure the RF brake controller, # TK94FR, will pair with the hand held unit. First, make sure the trailer is coupled to the towing vehicle. Then plug the RF into the tow vehicle connector making sure the trailers connector is not connected to the RF yet.

Next, start the tow vehicle engine and then plug the hand-held unit into the auxiliary power port. Turn the power knob until the display reads a flashing 0.0. Then, press and hold both the manual override and boost buttons until the display goes from P.5 to P.A. Sometimes, it will not go to P.A., and if this happens just keep going through to the next step.

Then release the buttons. Press and hold the brake pedal until the hand-held displays a flashing 0.0. Set the power knob a little higher until the display reads a flashing n.c. Last, connect the trailer connector to the RF and it should then read .c. for connected.

If you have followed these instructions precisely and still have a problem there could be a separate issue that does not allow the unit to be paired with the hand-held control. There could be a short to the brake wire caused by corrosion or a bad brake magnet ground. I have included a link to the installation details for reference.

If you are still having issues it could be with the 7-Way on the X5. The only way around it is to install a separate 7-Way using # ETBC7 and a 4-Way, # 119250KIT. This will bypass the factory 7-Way if it is indeed the problem. I have included some informational links on the wiring for you. You will not need the part in the FAQ or video on the ETBC7 that explains the brake controller installation.