Description
BOSCH Control Unit for Parking Assist of PEUGEOT 407
Upgrade your workshop inventory with a genuine BOSCH parking distance control (PDC) ECU for Peugeot 407. This control unit handles ultrasonic sensor inputs and delivers reliable parking assistance, improving safety and reducing minor parking damage. Ideal for professional mechanics and competent DIY enthusiasts, the unit is frequently searched by its product numbers – include them in your part lookup to match vehicles quickly. Compatible with factory-installed parking assist systems, this ECU is a direct-fit replacement for affected Peugeot 407 models and helps restore full PDC function when the original unit has failed.
Features And Function
The ECU interprets signals from the vehicle’s ultrasonic sensors, calculates obstacle distance and triggers the audible/visual warnings in the cabin. It manages sensor diagnostics, fault reporting and communicates with the vehicle CAN network to display information to the driver. Using an OEM BOSCH control unit ensures correct signal processing and preserves original system behaviour.
Technical Information
- Manufacturer: BOSCH
- Model: Peugeot 407
- Product Codes: 9656174280, 9659350680
- Other Numbers: 0263004095, 6590L7, 6590T5
Compatibility
Fits Peugeot 407 vehicles equipped with factory parking assist (Sedan, SW, Coupé). Check the product codes above when searching for vehicle-specific matches to ensure compatibility with the original system.
Replacement Procedure (Overview)
Typical replacement requires access to the control unit location (commonly mounted in the boot/trunk area or behind a rear trim panel depending on model specification). Basic steps: safely lift/access the rear trim, disconnect the battery, unplug the unit connectors, remove the mounting fasteners, fit the replacement ECU, reconnect connectors and reassemble. After physical replacement, clear any stored fault codes and run the PDC self-test. Some vehicle variants may require additional initialization or coding via diagnostic equipment to restore full functionality.
Installation Recommendations
- Disconnect the battery before starting work to avoid short circuits and spurious fault entries.
- Inspect sensor connectors, wiring looms and fuses for damage or corrosion before and after fitting the new unit.
- Use a suitable diagnostic tool to read fault codes, reset the PDC system and perform any required calibration or adaptation procedures.
- Ensure connectors are fully engaged and that seals are intact to prevent moisture ingress.
- Secure the unit in its original mounting position to avoid vibration damage.
Why This Part Fails
There is no fixed replacement interval. Failures most commonly result from moisture ingress and corrosion, physical damage from impacts or collisions, electrical surges, degraded internal components with age, or fault conditions caused by damaged sensors or wiring. Symptoms of a failing PDC ECU include constant or intermittent error messages, loss of audible/visual parking alerts, or incorrect distance readings.
Recommended Checks Before Replacement
- Verify sensor condition and resistance values where possible; a single faulty sensor can trigger ECU faults.
- Inspect wiring looms for chafing, broken cores or connector corrosion.
- Check related fuses and vehicle body grounds.
- Read and record fault codes to confirm ECU diagnosis and to assist with post-replacement verification.
Notes For Professionals
This unit is aimed at professional repair shops and experienced DIYers familiar with vehicle electrical systems. Including the OEM product codes in your order and diagnostics reduces downtime and ensures a correct match. After installation, perform a full system check and document the repair for future reference.
