Description
BOSCH control unit for the parking assist system of PEUGEOT 407 vehicles
Part description
Used PDC parking assist control unit for Peugeot 407 manufactured by BOSCH. This type of unit processes signals from the parking sensors and helps alert the driver to obstacles while parking. When repairing a non-functional parking assist system, it offers the option of replacing the control electronics alone if diagnostics confirm that they are faulty.
When selecting a part, compare the product numbers, connector designs and markings on the original unit in particular. The listed codes make it easy to find the part using the number on its label. However, a non-functional parking assist system does not necessarily mean the unit is faulty—the cause may also be the sensors, wiring or power supply.
Technical information
- Manufacturer: BOSCH
- Model: Peugeot 407
- Part type: PDC parking assist control unit
- Condition: used part
- Additional numbers: 0263004095, 6590L7, 6590T5
Product codes
- Product codes: 9656174280, 9659350680, 0263004095, 6590L7, 6590T5
The markings shown are used to identify the part on offer. Before replacement, compare the marking on the original unit and verify that the replacement is suitable using the service documentation for the specific vehicle configuration.
Installation recommendations
The following general procedure applies to this type of electronic part. Exact access to the unit, the removal method and any configuration requirements depend on the specific vehicle configuration. Follow the manufacturer’s service procedure.
1) Before installation
- First, use diagnostics to distinguish a faulty control unit from a fault in the sensors, wiring, power supply or grounding.
- Compare the product numbers, connector shape and number, keying and mounting points with the original part.
- Inspect the housing of the used unit, connector pins and latches. Look for cracks, deformation, corrosion and signs of moisture.
- If the original unit was exposed to water, fix the source of the leak before installing the replacement part.
2) Tools and materials required
- Standard hand tools suitable for the fasteners used, and plastic trim removal tools if needed.
- A diagnostic tool that supports the vehicle’s parking system.
- A multimeter for checking the power supply and wiring according to the wiring diagram.
- A clean cloth and, if needed, a product suitable for cleaning electrical contacts.
3) Step-by-step installation procedure
- Secure the vehicle against movement and read and record any parking system faults before removal. If the original unit’s configuration is available, record that too.
- Switch off the ignition and, following the manufacturer’s procedure, allow the electronic systems to enter their standby state.
- Disconnect the battery in accordance with the vehicle’s service procedure. Do not disconnect the unit’s connectors while they are live.
- Access the unit according to the service documentation. Release any covers and trim without forcing them to avoid damaging the clips.
- Before disconnecting anything, record the wiring routing and connector connections, for example by taking a photo.
- Release the connector locks and disconnect them by pulling on the connector housing, not the wires.
- Release the mounting and remove the original unit. Inspect the surrounding area, connectors and wiring harness for moisture or mechanical damage.
- Compare the two parts once more. Repair any faults in the connectors or wiring before connecting the replacement unit.
- Secure the replacement unit in the original mounting without putting strain on its housing, and connect the connectors until their locks are fully engaged.
- Route the wiring so that it is neither pinched nor under tension, and refit the covers and trim that were removed.
- Reconnect the battery according to the manufacturer’s procedure and use diagnostics to check communication with the unit. If required for this vehicle configuration, perform the prescribed configuration.
- After resolving the causes of the faults, clear the relevant fault records and verify that the parking assist system works.
4) Post-installation checks and function verification
- Verify that the unit communicates with the diagnostic tool and that faults do not recur when the system is activated.
- Test the parking assist system’s response to a suitable obstacle in a safe area, while manoeuvring very slowly and leaving plenty of room to stop.
- Check the warnings applicable to the vehicle’s equipment. The parking assist system is only an aid; watch your surroundings during the test and do not rely solely on its signals.
5) Common installation errors and how to avoid them
- Replacing the unit without diagnostics: first check the sensors, power supply and wiring to ensure the replacement addresses the actual cause of the fault.
- Selecting a part based only on the vehicle model: also compare the unit’s markings and design.
- Connectors not fully seated or bent pins: insert connectors straight and without forcing them, then check that they are securely locked.
- Moisture or corrosion left in place: before installation, eliminate the source of any leak and repair affected connections.
- Skipping the final check: after connecting the unit, perform both diagnostics and a practical test; carry out any required configuration according to the service instructions.
Reasons why the part may become damaged
The following causes can generally lead to damage or malfunction in parking assist control units. This is not a description of the condition of this specific part.
- Moisture ingress and corrosion of the connectors or internal electronics.
- A short circuit in the wiring or connected components, which may overload the unit’s circuits.
- Overvoltage or incorrect handling of the power supply when working on the electrical system.
- Mechanical damage to the housing, connectors or mounting caused by careless removal.
- Aging electronic components and thermal stress, which may cause permanent or intermittent failures.
