Description
Overview
Bosch ESP control unit for Peugeot 406. This ABS/ESP electronic control module is referenced under part numbers 0265109089, 9650786280 and identifier 4542A4. It controls the vehicle’s anti-lock braking and electronic stability functions and is intended for PSA Group vehicles such as the Peugeot 406.
Key Features
- Direct-fit replacement for Peugeot 406 with matching wiring and mounting points.
- Manufactured by Bosch & designed to operate with the vehicle’s ABS pump and wheel-speed sensors.
- Restores ABS and ESP functionality when correctly installed and programmed.
- Commonly searched by part number (0265109089, 0 265 109 089, 9650786280, 4542A4).
Signs Of Failure
- ABS or ESP warning light illuminated on the dashboard.
- Loss of traction control or irregular braking behavior under heavy braking.
- Intermittent faults logged in the ABS/ESP system or communication errors on diagnostic scan.
Replacement And Installation
- Disconnect the vehicle battery and follow manufacturer safety procedures before starting work.
- Locate the ABS/ESP control unit (typically mounted on or near the ABS hydraulic unit).
- Remove electrical connectors and mounting bolts, taking care to avoid damage to plug terminals.
- Install the replacement unit, secure all fasteners and reconnect electrical connectors.
- Bleed the brake system as required to remove air introduced during removal.
- Use a compatible diagnostic tool (dealer or aftermarket PSA/Diagbox-capable tool) to clear fault codes and, if necessary, program or adapt the unit to the vehicle. Some vehicles require unit matching or VIN coding for full functionality.
- Verify correct operation by road-testing in a safe area and rechecking for stored faults.
Maintenance And Durability
ESP control units are durable but can fail due to moisture ingress, corrosion on connectors, electrical surges, or physical damage. Regular inspection of the ABS pump area and connector seals helps extend service life. When replacing, ensure connectors are clean and fully seated to prevent intermittent faults.
Technical Information
- Manufacturer: Bosch
- Model: Peugeot 406 (PSA)
- Product Codes: 0265109089, 0 265 109 089, 9650786280
- Other Numbers: 4542A4, 265109089, NFP
If you are a professional mechanic or an experienced DIYer, this Bosch ESP control unit is a suitable replacement option for affected Peugeot 406 vehicles. For correct installation and full restoration of system functions, programming or adaptation with the appropriate diagnostic equipment is often required.
