Rear wiper mechanism Peugeot 407 SW 9651000780 6405Z1

Description

Rear wiper mechanism BOSCH PEUGEOT 407 SW
The bearing is functional, the microswitch is functional

Part description

This rear wiper mechanism is intended for Peugeot 407 SW cars and is suitable as a replacement for rear wiper malfunctions (non-functioning operation, irregular movement or switching problem). Thanks to the information about the functional bearing and microswitch, this is a part that can quickly return the rear wiper to operation without unnecessary searching for the cause in the entire circuit.

To make the right choice, it is crucial to compare the part numbers and the design according to the original mechanism in the car.

Technical information

• Manufacturer: BOSCH
• Model: Peugeot 407 SW
• Other numbers: 9637858580, 6405Z1, 6405K3, 6405K4, 6405K5, 450343, 6936C2

Product codes

• Product codes: 9651000780, 9637858580, 6405Z1, 6405K3, 6405K4, 6405K5, 450343, 6936C2

Installation recommendations

Generally/typically for wiper mechanisms, the exact procedure may vary depending on the car design and the specific design of the mechanism. Below is a practical one-size-fits-all procedure that is used most often.

1) Before assembly

• Compare the old and new part: codes (9651000780 / 6405Z1 and others), mechanism shape, connector type and position, attachment.
• Check the condition of the shaft/bearing and lever gear (if included): they must not be excessively worn or corroded.
• Verify that the bearing is functional and the microswitch is functional (according to the part description).
• Inspect the vehicle connector and wiring – oxidation and loose pins are common.

2) Necessary tools and materials

• A set of common hand tools (ratchet/bits, screwdrivers)
• Plastic crowbar for removing upholstery/covers
• Contact cleaner, cloth
• Or a cutter/penetrator (if the old mechanism is stiff)

3) Step-by-step assembly procedure

1. Turn off the ignition and disconnect the battery (recommended for electrical parts due to short circuits and unwanted activation).
2. Ensure access to the mechanism: remove the necessary internal covers/paneling in the rear wiper area (typically plastic parts – proceed with caution).
3. Disconnect the electrical connector of the mechanism and check that the pins are not oxidized.
4. Dismantle the fastening elements of the mechanism (bolts/nuts depending on the design) and remove the old mechanism.
5. Clean the contact surfaces and surroundings – dirt can cause tension and subsequent creaking or poor seating.
6. Place the new mechanism in the same position as the original piece and lightly clamp it first.
7. Connect the electrical connector and check for a proper click.
8. Tighten the fasteners and make sure the mechanism fits tightly without play.
9. Reinstall the removed covers/trims.
10. Connect the battery.
• 4) Post-assembly checks and test drive/function verification
  • Verify the operation of the rear wiper in all modes offered by the car (on/off).
  • Check for jerky operation, unusual noises from the mechanism and dropouts (may be connector/microswitch related).
  • After a short period of use, recheck the fastening and seat of the covers.

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

  • Swapping part by appearance without checking codes → always compare numbers 9651000780 / 6405Z1 and others listed.
  • Damage to the connector or pins during disassembly → disconnect the connector carefully, clean the contacts if necessary.
  • Impurities on the contact surfaces → clean before assembly, the mechanism then sits without tension.
  • Assembly without disconnecting the battery → risk of short circuit or unwanted activation, recommended to disconnect.

  Reasons why the part is damaged

  • Intrusion of water and corrosion in the area of the rear door/covering, subsequent stiffening and increased load on the mechanism.
  • Bearing wear and clearance in the bearing, resulting in noise, erratic running or seizing.
  • Wiper overload (frozen glass, dirt) – the motor/mechanism works against resistance.
  • Electrical problems (oxidation of connectors, transition resistors) causing blackouts or irregular switching.
  • Microswitch fault which can cause incorrect switching/parking according to system design.