OEM Parking Aid Sensors Install With Active Park Assist 2019-2024

[Wubster100]

Hi everyone,

 

I am looking for the parking sensor wiring diagrams and information to show the parking sensor wires and how they go all the way to the BCM. I am looking for wiring information on all 12 sensors. Hopefully I can add more parking sensors to mine.

Edited Friday at 02:02 AM by Wubster100

[Haz]

Attached...

 

Good luck!

 

Parking Aid Wiring Diagram #1 - 2024 Edge.pdf Parking Aid Wiring Diagram #2 - 2024 Edge.pdf Parking Aid Wiring Diagram #3 - 2024 Edge.pdf Parking Aid Wiring Diagram #4 - 2024 Edge.pdf Parking Aid Wiring Diagram #5 - 2024 Edge.pdf Parking Aid Wiring Diagram #6 - 2024 Edge.pdf Parking Aid Wiring Diagram #7 - 2024 Edge.pdf Parking Aid Wiring Diagram #8 - 2024 Edge.pdf Rear Parking Aid Sensors - Wiring Harness Location - 2024 Edge.pdf Front Parking Aid Sensors - Wiring Harness Location - 2024 Edge.pdf Rear Parking Aid Camera - Wiring Harness Location - 2024 Edge.pdf Front Parking Aid Camera - Wiring Harness Location - 2024 Edge.pdf Rear Parking Aid Sensors - Inline Connector C438 - 2024 Edge.pdf Rear Parking Aid Sensors - Inline Connector C140 - 2024 Edge.pdf Active Park Assist Switch - Connector C3466 Location - 2024 Edge.pdf Active Park Assist Switch - Connector C3466 - 2024 Edge.pdf

[Wubster100]

Thank you for the requested documents. My 2021 only has the 4 rear parking sensors. I want to try to add the 4 front sensors and 4 side sensors for active park assist.

[Wubster100]

@Haz Do you have a BCM pinout that shows the pins that the parking sensors use?

[Haz]

Body Control Module (BCM) connector information and Parking Aid/Active Park Assist operational information attached below as PDF documents...

 

 

BODY CONTROL MODULE (BCM) - Connector C2280G Pins-Circuits Detail - 2021 Edge.pdf BODY CONTROL MODULE (BCM) - Connector C2280G Location - 2021 Edge.pdf BODY CONTROL MODULE (BCM) - Connector C2280E Pins-Circuits Detail - 2021 Edge.pdf BODY CONTROL MODULE (BCM) - Connector C2280E Location - 2021 Edge.pdf BODY CONTROL MODULE (BCM) - Connector C2280C Pins-Circuits Detail - 2021 Edge.pdf BODY CONTROL MODULE (BCM) - Connector C2280C Location - 2021 Edge.pdf BODY CONTROL MODULE (BCM) - Illustration Showing Connector Locations - 2021 Edge.pdf BODY CONTROL MODULE (BCM) - Fuses-Circuits Legend - 2021 Edge.pdf

[Haz]

Additional...

 

Good luck!

 

Parking Aid - Active Park Assist System Operation and Component Description - 2021 Edge Workshop Manual.pdf Parking Aid - Active Park Assist Overview - 2021 Edge Workshop Manual.pdf Parking Aid - Active Park Assist Component Location - 2021 Edge Workshop Manual.pdf Parking Aid - Active Park Assist Azimuth System Check - 2021 Edge Workshop Manual.pdf Parking Aid - Front Active Park Assist Sensors - Removal and Installation - 2021 Edge Workshop Manual.pdf Parking Aid - Rear Active Park Assist Sensors - Removal and Installation - 2021 Edge Workshop Manual.pdf Rear Bumper Cover - Removal and Installation - 2021 Edge Workshop Manual.pdf Parking Aid - Active Park Assist - Diagnosis and Testing - 2021 Edge Workshop Manual.pdf

[Wubster100]

Thanks Haz! Once again, helpful documents!

[enigma-2]

You should be aware that Ford sells an add-on kit for four front sensors, wiring and a module.

 

I looked at having my local dealer add this option years ago and decided that drive by feel was just as effective. If I remember correctly, I think the dealer quoted me 3 hours labor + price of the kit.

 

It involved drilling holes in the bumper cover, installing the sensors, running the wiring harness and revising the body control module software to accommodate the circuit and register the upgrade with Ford (or Lincoln as in my case) for future software upgrades. 

 

I don't believe that you can just add additional sensors to the existing module because it's only  energized in reverse, and the front circuit is only energized in drive. (Plus there's the question of how much load these modules are designed to carry.)

 

There are also aftermarket, wireless kits available and don't depend on the BCM. (Yuck pooee.)

 

Suppose you could always drill holes in your cars side to mount sensors. (Good luck on that.)

 

 

[Wubster100]

I didn't know of any OEM add-on kits. The only one I see now is VAS4Z-15A866-B. I couldn't seem to find installation instructions for the kit.

 

I want to try to stay with an OEM solution so that the parking sensors will integrate with the BCM and other electronics. I don't think I want to do an aftermarket kit because it would require another monitor / beeper.

 

I want to add 8 more sensors, front and sides, and I also want to try to get active park assist.

 

[Wubster100]

I checked out some of the connectors on the BCM, and I connected a wire toner. I was able to hear the beeping by the rear parking sensors and by the front bumper. It looks like I have all of the wires I need to add the other parking sensors.

 

I also began creating a temporary wiring harness for the front sensors.

[Wubster100]

An update, I have all 12 parking sensors connected. 4 Front and 4 rear parking sensors are operational. Still working on the side sensing system. I am not sure if I will try active park assist because I do not have the 2 rear wheel ABS sensors required.

[Wubster100]

All 12 parking sensors are operational. Thank you @Haz for providing the requested documents. 
 

I have temporarily taped on the additional 8 sensors. I am able to hear the beeping and I get a visual aid on screen. I need to order the brackets that hold the parking sensors in place. It looks like the spots to drill holes already marked with X’s. I may also order the park aid on/off switch if the parking sensors cannot be turned off through software switches. 
 

I decided to not complete active park assist at this time because I don’t want to get 2 new rear ABS sensors. I am not sure if I would also need to get the 2 more expensive parking sensors in the front. Right now I am using 8 of the same non-OEM sensors and they are working well.

 

Edited January 21 by Wubster100

[Wubster100]

6 months later… 😅 I finally installed the 6 front parking sensors.

 

1: Auto Park Front Right

2: Front Right Outer

3: Front Right Inner

4: Front Left Inner

5: Front Left Outer

6: Auto Park Front Left

 

[Wubster100]

I did not install a physical switch to turn the park aid on/off. Instead, I can turn the system on/off through the IPC. I still have the 2 rear side sensors to install.

Edited January 21 by Wubster100

[Wubster100]

So I am working on Installing the 2 rear side parking sensors, however I can’t get them to work. When I had originally connected them to test, everything did work.

 

I started by unplugging both of the parking sensors, and I connected jumper wires to do pinpoint tests. I checked for any short circuits. Then, I checked the power and ground with the key on and with the ignition on. So, I unplugged the BCM connector C2280E, which has rear park aid power, ground, and the rear side sensors. I took a piece of wire and connected it into the BCM connector, so that I could measure the resistance of the circuit from the parking sensor connector all the way to the BCM connector. I also checked for a short circuit between the two parking sensors. 
 

So, all of my wiring seemed to be good. Maybe a parking sensor went bad somehow? So, I swapped the two parking sensors with the two rear outer parking sensors. Still no fix.

 

All 10 of the other parking sensors are working. I completed a BCM, PAM, and APIM self test. No DTCs. I completed a BCM, PAM, and APIM module reboot. 
 

I am running out of ideas. I can’t think of anything else to test for. It’s getting annoying because the rear side parking sensors used to work when I had them temporarily installed to test. Now, I can’t get them to work once I am here to permanently install them. 😭😔

 

Side note: I also have 2 new bi-directional rear wheel speed sensors for active park assist, but I won’t be able to install them until I have these last 2 side sensors working.

[Wubster100]

I have one other idea to test. There could be a partial break in the circuit, where there is signal degradation, but not a total failure. There is a good enough connection to carry steady voltage and pass resistance checks with a multimeter, but the circuit should fail under a load test.

Edited Wednesday at 09:36 PM by Wubster100

[enigma-2]

My money would be on the  connectors. (They worked when you tested them, you tried other, know good sensors, so I'd assume there's a problem in the connection. Look for green crusties or dirt.)

 

I assume the other sensors at the rear work normally?)

 

Doubt it will do any good, but wouldn't hurt to reset the system. On your info screen, in reverse, turn off the backup sensors. Put in drive, then back in reverse and turn the sensors back on. 

 

.

Edited Wednesday at 09:52 PM by enigma-2

[Wubster100]

18 minutes ago, enigma-2 said:

My money would be on the  connectors.

I am thinking so too. I will have to double check the wiring again.

 

29 minutes ago, enigma-2 said:

I assume the other sensors at the rear work normally?

Yes, all 10 other sensors are working.

 

30 minutes ago, enigma-2 said:

Doubt it will do any good, but wouldn't hurt to reset the system. On your info screen, in reverse, turn off the backup sensors. Put in drive, then back in reverse and turn the sensors back on. 

This happened when I rebooted the modules.

[Wubster100]

Can you please post the wiring diagrams where C438 goes up into the vehicle? It looks like the wires go up toward the trailer tow module.

 

Edit: never mind, I found it.

 

 

Edited Thursday at 07:57 PM by Wubster100

[enigma-2]

On 4/16/2025 at 6:18 PM, Wubster100 said:

This happened when I rebooted the modules.

Hold on, that's a big clue.

 

If the sensors worked when first tested, they may have been using the old sensor data, still  encoded in the module.

 

After rebooting, the module reread the sensors, and the new sensors were reread and the module turned off their inputs (believing they were generating bad data.) 

 

Try switching sensors, then reseting the circuit.

 

The old sensors "shoud" be read as good and work in their new positions. But the new sensors, now relocated to their new positions, should get locked out.

 

If this test works, it would indicate that you may have bought the wrong sensors, or  Chinese aftermarket. (Arrruggg)

 

 

 

 

Edited Thursday at 10:47 PM by enigma-2

[Wubster100]

I should clarify that even after restarting the modules, the parking sensors still didn’t work. Only the 10 other sensors work fine.

 

I mean that “reset the system” = “rebooted the modules”

Edited Friday at 01:39 AM by Wubster100

[Wubster100]

I do see some corrosion in the connections underneath the vehicle. However, all 10 of the other parking sensors are working.

There should be no problems with the parking sensors themselves, because they used to work previously, and I have swapped them out with the ones in the rear to test.

 

So, now I have removed the cargo trim panel to access the wiring. I have connected the parking sensors directly to the wiring.

 

I also got code B13F4 - Right Rear Side Sensor - :14 Circuit Short to Ground or Open. At least I see that something is happening. I reset the DTC and it isn’t coming back.

 

I am still in the same situation with no DTCs, and the rear side sensors still don’t have any signs of working.

 

[Wubster100]

I have also looked for live data from the PAM. I am able to see the distance reading in cm for the 8 front + rear sensors. I am able to see the distance reading in mm of the front side sensors. However, a reading for the rear side sensors doesn’t seem to exist at all. There is no ID value to get a distance reading from the PAM.

Edited Friday at 02:03 AM by Wubster100

[Wubster100]

Everything seems to be connected fine, and I don't have any DTCs, yet the 2 rear side parking sensors are still not working.

 

So, I decided to do more testing. If I short the left rear side sensor to power, I get DTC B13F3:12. If I short the right rear side sensor to power, I get DTC B13F4:12. If I short the left rear side sensor to ground, I get DTC B13F3:14. If I short the right rear side sensor to ground, I get DTC B13F4:14. If I disconnect the left rear side sensor to ground, I get DTC B13F3:14. If I disconnect the right rear side sensor to ground, I get DTC B13F4:14.

 

Clearly the DTCs seem to be working correctly if there were to be a fault in the wiring.

[Wubster100]

I put my ear up to all 12 parking sensors, and they are all making the “clicking” noise. The only problem is that the 2 rear side sensors still don’t work because there is no audible beep from them.