Parking assist control unit Citroën Peugeot 9828750880 1679621280

Description

PDC obstacle detection control unit for Stellantis Group vehicles

Part description

Used PDC parking assist control unit with part numbers 9828750880 and 1679621280, intended for the obstacle detection system. This type of control unit evaluates signals from the parking sensors and helps alert the driver to obstacles while parking. If the original control unit is faulty, this may be a suitable way to restore parking assist functionality without buying a new part.

When selecting a part, compare in particular the product numbers, connector design, and markings on the original control unit. Matching the vehicle model alone is not enough to determine interchangeability; the specific parking system configuration is also important. The available information does not state whether this unit requires configuration after installation.

Technical information

• Manufacturer: not specified; the available information refers to the Stellantis Group.
• Model: Citroën Berlingo K9, Citroën C4 Cactus, Citroën C4 Picasso II, DS7, FIAT DOBLO III, PEUGEOT RIFTER, Toyota ProAce City.
• Part type: PDC obstacle detection / parking assist control unit.
• Category: electrical components – parking assist – control units.
• Condition: used automotive part.
• Other numbers: not specified.

The models listed are taken from the product labels. Model years, engine variants, and specific trim levels are not specified in the available information.

Product codes

• Product codes: 9828750880, 1679621280.

Both numbers can be used to identify the part being offered. The available information does not confirm that they are interchangeable or suitable for all variants of the models listed.

Installation recommendations

General guidance for this type of part: replacing a PDC control unit requires careful handling of the connectors and following the manufacturer’s procedure for disconnecting and reconnecting the battery. The procedure below is general; the exact access to the control unit, its mounting, and any required configuration depend on the specific vehicle model and configuration.

1) Before installation

• Use diagnostic equipment to verify the cause of the fault. A parking assist malfunction may also be related to the sensors, wiring, power supply, or connectors, and not just the control unit.
• Compare the markings on the old and replacement parts, the shape and number of connectors, their keying, and the mounting points.
• Inspect the housing of the used control unit, the locking elements, and the contacts. Cracks, signs of moisture, corrosion, or deformed pins must be addressed before connection.
• If the original control unit can be accessed using diagnostic equipment, record its identification and settings in case subsequent adaptation is required.

2) Tools and materials required

• Standard hand tools suitable for the fasteners used.
• Plastic trim removal tools if access requires removing trim.
• Diagnostic equipment that supports the vehicle’s parking system.
• A flashlight and, if necessary, a product intended for cleaning electrical contacts and suitable for the connectors in question.

3) Step-by-step installation procedure

1. Park the vehicle safely and secure it against movement. Before starting work, record the symptoms of the fault and any available diagnostic data.
2. Switch off the ignition and, in accordance with the manufacturer’s service procedure, allow the electronic systems to enter their rest state.
3. Disconnect the battery as specified by the vehicle manufacturer. Do not disconnect or connect the control unit connectors while they are live.
4. Access the control unit according to the service documentation for the specific vehicle. Release covers and trim without forcing them, to avoid damaging their clips.
5. Before disconnecting anything, record the wiring routing and connector connections, for example by taking a photograph.
6. Release the connector locks and disconnect them by pulling on the connector body, not the wires. Check the condition of the contacts and wiring harness.
7. Release the original control unit’s fasteners and remove it. Also check the surrounding area for moisture or mechanical damage.
8. Compare the two control units once again. If you find different connectors or are unsure about the configuration, stop the installation and verify compatibility using catalog and service information.
9. Secure the replacement control unit as specified. Route the wiring without tension, pinching, or contact with sharp edges.
10. Connect the connectors and verify that their locks are fully engaged. Reinstall the covers and trim that were removed.
11. Reconnect the battery according to the manufacturer’s procedure and use diagnostic equipment to check communication with the control unit. If required for the specific configuration, perform the prescribed parking system configuration.
12. After resolving the cause of the fault, clear the relevant fault codes and perform a function check. Then read the diagnostic data again.

4) Post-installation checks and function verification

• Verify that the control unit communicates and that the system does not report a parking assist fault.
• In a safe, open area, test the response to a suitable inanimate obstacle. Check the audible and, where applicable, visual alerts according to the vehicle’s equipment.
• Proceed slowly during the test maneuver, watch your surroundings, and do not rely solely on the parking sensors. Do not use a person standing in the vehicle’s path for testing.
• If operation remains intermittent, continue by checking the sensors, wiring, power supply, and system settings.

5) Common installation errors and how to avoid them

• Replacing the control unit without diagnostics: first rule out faulty sensors, broken wires, and power supply problems.
• Choosing a part based only on the vehicle name: compare the part numbers and parking system configuration.
• Forcing connectors into place: check their orientation, keying, and pin condition; a correct connector should not require force.
• Leaving moisture or corrosion in place: address the cause of water ingress and repair damaged connections before installation.
• Skipping any required configuration: check the service procedure for the specific vehicle configuration to determine the setup requirements.

Reasons why the part may be damaged

The following factors may generally cause damage to parking assist control units. They do not describe the condition of the unit being offered.

• Moisture and water ingress, which may cause contact corrosion or damage to the internal electronics.
• Electrical faults, such as a short circuit in the connected wiring, overvoltage, or incorrect handling of the power supply.
• Mechanical stress, impact, housing damage, or loose mounting.
• Improper handling, especially damage to pins or connector locks, or connecting the unit while live.
• Aging electronic components and thermal stress, which may gradually compromise the reliability of the control unit.

Before replacing the part, it is important to eliminate the cause of the original fault as well, so that the replacement part is not exposed to the same risk.