Rear ParkSense Installation Troubleshooting Guide

For: 2019–2024 Ram 1500 DT & Ram 2500/3500 Heavy Duty
Components: 4 Rear Sensors (mounted in bumper valances), rear wiring harness, interior ParkSense module, and power harness.

✅ Initial Installation Checklist

Parts Check

✅ Rear bumper valances (with sensor ports)
✅ Rear sensor wiring harness
✅ Interior ParkSense module
✅ Rear Park Assist power harness (C-INTPKAC1-DT)
✅ Star connector plug (for interior CAN network)

Tools Needed

• 8mm, 10mm, 15mm sockets

• 7mm socket (for radio bezel removal)

• Plastic trim tools and pry bars

• Drill (for firewall cover pass-through)

• Zip ties

• Silicone sealant

🔧 Troubleshooting Installation Steps

1. Rear Harness Routing

• Run new harness from rear bumper along driver's side frame.

• Zip tie excess wiring to factory harness—avoid the steel parking brake cable.

Troubleshooting Tip:
If wiring is hanging loosely or routed near moving parts, recheck and secure it to stationary harnesses or frame rails.

2. Wheel Well Access

• Remove driver’s side plastic wheel well liner:
  (8) 8mm bolts, (1) 10mm bolt, (2) clips.

Troubleshooting Tip:
If the liner feels stuck, verify all bolts and clips are removed—don’t force it.

3. Firewall Access

• Remove interior cover (2x 15mm nuts), drill access hole, and route harness into cab.

• Seal hole with silicone to ensure water protection.

Troubleshooting Tip:
Double-check routing path to avoid contact with hot exhaust or sharp frame edges.

4. Module Installation

• Mount rear Park Assist module under driver dash panel.

• Slide left tab into place, snap right side clip.

• Plug main harness into center port of module.

Troubleshooting Tip:
If harness won’t seat fully, inspect connector for bent pins or debris.

5. Power Harness Connection

• Remove dash tray (top), remove (2) 7mm bolts to detach radio bezel.

• Plug red-labeled connector into 12V cigarette lighter.

• Route harness behind radio to driver footwell.

Troubleshooting Tip:
If cigarette lighter doesn’t provide power, test circuit or confirm fuse isn't blown.

6. Wire Harness Connections

• Plug connector into left port of ParkSense module.

• Plug start port connector into a star port (CAN network) behind driver’s footwell.
  

• Star Port Connection (CAN network)
• Heavy Duty Location: Behind driver's footwell on left side
  
• Double Row Green Connection (refer to image below)
• 
  
• 1500 DT Location: Behind headlight switch to the left of the steering wheel
  
• 
  
• Plug the harness into the CAN star port connector.
• 
  

7. Panel Reinstallation

• Reinstall all removed panels for a factory look.

🧠 Programming & Finalization

Bypass Installation (2018+ Only)

• Temporarily disconnect Security Gateway (SGW) module behind cluster.

• Install SGW bypass harness.

Genie Programming Steps

I. Turn key to RUN (engine off)
II. Wait 60 seconds
III. Plug in Genie programmer
IV. Wait for solid green light (1–3 minutes)
V. Remove Genie
VI. Let vehicle sleep for 5 minutes
VII. Test ParkSense system

Troubleshooting Tip:
If Genie flashes red or doesn’t finish, confirm SGW bypass is fully seated and wiring connections are tight.

❗ Common Issues & Fixes

💡 Things To Know

• Chime Volume Control: Adjust via Uconnect settings (Low / Medium / High).

• Fuse Draw Issue: Some installs may cause parasitic draw—adjust Fuse F54 if needed. [CLICK HERE for Fuse F54 Fix]

• Valance Fitment (Ram 1500 DT):
  If your truck doesn’t have dual exhaust, order:

  • Left: 68404393AB

  • Right: 68404392AB

🚘 Why Upgrade to OEM Rear ParkSense?

Experience enhanced safety and effortless parking with an OEM ParkSense Rear Park Assist system:

• Detects obstacles behind your truck in blind zones

• Provides audible chimes and on-screen distance alerts

• 100% plug-and-play with no dealer programming required

• Fully integrated with your factory Uconnect display

📺 Installation & System Videos