Description
Product Overview
High-quality Bosch ABS/ESP control module and hydraulic pump assembly suitable for Peugeot 407 PSA applications. This unit combines the electronic control unit (ECU) for Anti-Lock Braking System (ABS) and Electronic Stability Program (ESP) with the hydraulic pump block and includes a piece of vehicle wiring harness to aid installation. Often searched by part numbers 0265951299 and 9666148080.
Key Benefits
- Direct replacement for failing ABS/ESP units on compatible Peugeot 407 vehicles.
- Includes hydraulic pump and a piece of wiring harness to simplify fitting.
- Bosch-manufactured unit used in PSA (Peugeot/Citroën) applications.
- Improves braking control and vehicle stability when functioning correctly.
Function And Symptoms Of Failure
The ABS/ESP module monitors wheel speed sensors and controls hydraulic valves and the pump to prevent wheel lockup and to maintain vehicle stability. Common symptoms that indicate a faulty unit include ABS or ESP warning lights on the dashboard, reduced braking performance, pulsating brake pedal, or intermittent communication errors on diagnostic tools. Failures are typically caused by electrical faults, water ingress, corrosion, or internal pump/valve wear.
Replacement And Installation Notes
Replacement should be performed by an experienced mechanic or a competent DIYer familiar with brake systems and vehicle electrics. Typical steps include:
- Disconnect the vehicle battery before starting to avoid electrical damage.
- Access the ABS/ESP module (often located in the engine bay or wheel arch area on Peugeot 407), remove mounting bolts and electrical connectors.
- Transfer any brackets or harness pieces as required and fit the supplied wiring piece where applicable.
- After mechanical installation, the brake system must be bled to remove air from the hydraulic circuit.
- Most vehicles require module coding or programming to the vehicle VIN and system configuration—ensure you have the appropriate diagnostic equipment or arrange professional coding.
Do not drive the vehicle until the brake system is bled and any required coding is completed. If unsure, consult a professional to avoid safety risks.
How Often Do These Units Fail?
There is no fixed service interval for ABS/ESP modules; lifespan varies with vehicle usage and environment. Units exposed to moisture, road salt, or mechanical damage are more prone to premature failure. Regular diagnostics and addressing brake system issues early can extend component life.
Technical Information
Manufacturer: Bosch / PSA (OEM Application)
Model: Peugeot 407 (PSA Vehicles)
Product Codes: 0265951299, 9666148080
Additional Numbers: 4541JK, 4541JL
Compatibility And Notes
This listing is aimed at mechanics and DIY enthusiasts who search by original part numbers. Confirm compatibility with your vehicle by checking the part numbers or consulting vehicle build data before purchase. The unit is suitable for PSA applications referencing the listed numbers. Programming or coding is commonly required after fitting to restore full functionality.
If you need assistance confirming fitment, provide your vehicle VIN and the part numbers, and a technician can verify compatibility.
