Part description

This used ABS Bosch includes control module, ABS pump and ESP/ABS hydraulic block. A piece of wiring is also included, which can make it easier to replace a damaged or non-functional original part. Parts of this type are important for the proper functioning of the vehicle’s braking system and electronic assistance systems.

The product is suitable for Citroën C4 and Peugeot 307 cars, while the documents indicate the origin of the car Peugeot 307, year 2006, 2.0 16V automatic. When looking for the right spare part, we recommend that you follow the specified production and product numbers.

Technical information

• Manufacturer: BOSCH
• Model: Citroën C4, Peugeot 307
• Other numbers: 1682607580, 4541Q4, 4541Q5

The part numbers 9663241680 and 0265950636 are listed on the part, which are essential when choosing this type of unit and hydraulic block.

Product codes

Product codes: 9663241680, 0265950636, 1682607580, 4541Q4, 4541Q5

• Citroën C4
• Peugeot 307

Installation recommendations

This part is a combination of electronic and hydraulic elements of the braking system. The exact procedure may vary according to the specific design of the car, so below we present the generally and typically valid procedure for replacing an ABS/ESP module with a hydraulic block.

1) Before assembly

• Check that all markings on the removed and new part match, especially 9663241680 and 0265950636.
• Compare the connectors, the number and distribution of the outlets, the attachment and the design of the hydraulic block.
• Check the condition of the connectors, pins and the attached wiring, whether they are oxidized, loose or mechanically damaged.
• Check if the unit body is cracked, deformed, or obviously affected by liquid or corrosion.
• Before starting work, secure the vehicle against movement and work in a clean environment.

2) Necessary tools and materials

• Set of common hand tools
• Suitable wrenches and attachments for removing brackets and connections
• Tool for gently disconnecting electrical connectors
• Cleaning agent for technical components and lint-free clean cloths
• Protective gloves and means for catching possible dirt
• Diagnostic equipment to check the system after assembly

3) Step-by-step assembly procedure

1. Disconnect the battery and allow a reasonable amount of time for the electrical system to safely disconnect.
2. Access the part space so that electrical and mechanical connections can be safely disconnected.
3. Carefully mark the individual connections and the position of the line, if the design of the car requires it.
4. Disconnect the electrical connector or connectors without using excessive force.
5. Unfasten the original module and hydraulic block.
6. Remove the old part carefully so as not to damage the surrounding components or wiring.
7. Compare the old and new piece side by side, including numbers, connectors, mounts and body shape.
8. Place the used part in place and check that it fits correctly in its original position.
9. Install the fasteners and tighten evenly without crossing or tensioning.
10. Connect the electrical connectors and any piece of wiring so that everything is firmly seated and not in tension.
11. Check the cable routing and around the part for rubbing, pinching, or excessive tension.
12. Reconnect the battery after assembly is complete.
• 4) Post-assembly checks and test drive/function verification
  • Visual check all connectors for proper seating and connection.
  • Use the diagnostics to verify the communication of the unit with the vehicle system, if the vehicle design requires it.
  • Check for ABS/ESP related warning lights.
  • Use caution when verifying functionality and first perform the check at low speed in a safe environment.
  • After a short test drive, recheck the fixings, connectors and the overall condition of the part’s surroundings.

  5) The most common assembly mistakes + how to avoid them

  • Part swapping by appearance instead of by code – always compare all numbers listed.
  • Damage to the connector or pins – disconnect and connect the connectors gently and without prying.
  • Insufficient wiring inspection – always check the condition of the insulation and the strength of the connection before installation.
  • Skip the output check – after installation, always verify the function of the system and any messages in the diagnostics.

  Reasons why the part is damaged

  • Moisture and corrosion in the connectors or on the electrical part of the module
  • Damage to wiring caused by age, vibration or improper handling
  • Mechanical stress and long-term vibrations during operation
  • Pollution and adverse operating conditions
  • Electrical defects in the vehicle installation that may affect the function of the control part
  • Normal wear and tear related to the age and operation of the vehicle
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