Part description

The used rear PDC harness is intended for the parking assistant system and is used to connect individual parts of the rear parking system. It is an electrical component from the category of cable harnesses, which is also searched for by original part numbers. It is especially important for auto mechanics and home repairers that when replacing a damaged harness, the correct function of the parking sensors can be restored without having to solve the entire system as a whole.

This part is useful when repairing Citroën cars and is often found under 9659517080 and 6575Y4. In the case of used cable harnesses, the advantage is a more affordable price compared to a new part and the possibility of a quick replacement for the original damaged piece.

Technical information

• Manufacturer: Stellantis Citroën Peugeot
• Model: Citroen C4 Picasso first series
• Other numbers: 9659517080, 6575Y4

Product codes

• Product codes: 9659517080, 6575Y4
• Models from labels/backgrounds: Citroen C4 Picasso first series; Peugeot 3008 I

Installation recommendations

As it is an electrical part – wiring harness, the exact method of replacement may vary according to the specific design of the car. The following procedure generally and typically applies to this type of part.

1) Before assembly

• Check the overall condition of the harness used, especially the integrity of the insulation, connectors, latches and grommets.
• Compare the new and original piece by shape, branch length, number of connectors and product numbers.
• Check the contacts for signs of oxidation, moisture or mechanical damage.
• Disconnect the battery before starting work to avoid a short circuit or damage to the wiring.

2) Necessary tools and materials

• Basic set of hand tools
• Plastic pry bar for panel removal
• Work lamp
• Electrical contact cleaner
• Protective gloves
• Tape tapes or regular fastening material if needed to restore fit

3) Step-by-step assembly procedure

1. Disconnect the battery and secure the vehicle against unwanted movement.
2. Access the space where the original parking assistant bundle is kept.
3. Carefully disconnect all connectors of the old harness without force to avoid damaging the mating parts.
4. Release the bundle from the holders, handles and any grommets.
5. Remove the original bundle and compare its design again with the replacement piece.
6. If necessary, gently clean the connectors and contact surfaces with a suitable product.
7. Store the replacement bundle in the same route as the original part to avoid stress or friction on surrounding parts.
8. Insert all connectors one by one until they are properly seated and secured.
9. Fix the bundle in all available holders and mounts so that it does not move freely.
10. Check that the wiring is not pinched, kinked or routed in a place of possible chafing.
11. Connect the battery and perform a basic system function check.
12. After successful verification, return all disassembled covers and trims.
• 4) Post-assembly checks and test drive/function verification
  • Verify that the parking assistant responds without dropouts and irregularities.
  • Check for sensor or wiring related error messages.
  • During test verification, observe whether the system works stably even during vehicle movement and vibrations.
  • After a short ride, visually check the harness seating and connectors again.

  5) The most common assembly mistakes + how to avoid them

  • Swapping connectors – mark or document the position of the connectors before disconnecting them.
  • Insufficient harness support – always restore original routing and fixings to prevent wiring from vibrating.
  • Clamping of wiring – check all passages and mating surfaces before final assembly.
  • Connection of dirty contacts – clean the contacts before assembly and check their condition.
  • Work under voltage – always have the battery disconnected when handling electrical installations.

  Reasons why the part is damaged

  • Insulation damage due to age and long-term thermal stress
  • Intrusion of moisture into the connectors and subsequent oxidation of the contacts
  • Mechanical interruption of the wiring after an impact or when repairing the rear of the car
  • Rubbing of the bundle against surrounding parts due to insufficient attachment
  • Damage to connectors by careless disassembly or repeated disconnection
  • Defects caused by a short circuit or previous unprofessional intervention in the electrical installation
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