Womala Rear Right Door Window Regulator OE 31253516 for Volvo S40 V50 Auto Parts

• Core Components:
  • Cable Drive System: High-tensile braided steel cables (resistant to stretching and fraying) routed through plastic or metal guides. The cables connect to a window mounting bracket and are wound around a gear-driven reel—when the motor (or manual crank) activates, the reel rotates to pull or release the cables, moving the window up/down.
  • Window Bracket: A reinforced plastic or metal bracket that secures the bottom edge of the window glass. It includes rubberized pads to prevent glass rattling and ensure a tight fit (loose brackets cause window wobble or uneven movement).
  • Motor Assembly (for power variants): A 12V DC electric motor (integrated with the regulator for S40/V50) with a gear reduction system—providing enough torque to lift the window smoothly, even against resistance (e.g., cold weather stiffening). The motor includes a built-in circuit breaker to prevent burnout from overload (e.g., if the window is blocked).
  • Guide Rails: Metal or hard plastic rails that guide the window bracket’s vertical movement, ensuring the window stays aligned with the door’s weatherstripping (prevents water leaks or wind noise).
• Corrosion & Wear Protection: All metal components (cables, reel, brackets) are coated with anti-rust treatments (e.g., zinc plating), while cable guides are lined with low-friction material (e.g., Teflon) to reduce wear from repeated movement.

Core Functions

• Precise Window Control: Enables smooth, quiet raising and lowering of the rear right window, with the ability to stop at any position (critical for ventilation, drive-through interactions, or passing items).
• Secure Window Retention: Holds the window firmly in the fully closed position, compressing the door’s weatherstripping to block water, wind, and road noise from entering the cabin.
• Power/Motor Protection: For electric variants, the built-in circuit breaker shuts off the motor if the window hits an obstacle (e.g., a hand, debris)—preventing motor burnout or window glass damage.
• Long-Term Durability: The high-strength cables and corrosion-resistant components ensure reliable operation even in harsh conditions (e.g., road salt, humidity), reducing the need for frequent replacements.

1. Confirm the vehicle’s trim (power vs. manual windows) via VIN or door inspection—this OE regulator is available in both power (with motor) and manual (crank-operated) variants. Installing a power regulator in a manual window door (or vice versa) will result in non-functionality.
2. Reference the S40/V50’s official service manual for disassembly steps: Removing the rear right door panel requires careful handling of plastic clips and electrical connectors (for power windows)—use a trim removal tool to avoid breaking tabs.
3. During installation, ensure the window bracket is fully secured to the glass (loose bolts cause window misalignment) and the cables are properly tensioned (too loose = slack; too tight = premature wear). Test the window through its full range of motion to confirm smooth operation and proper sealing when closed.
4. Lubricate the guide rails and cable guides with a silicone-based lubricant (avoid petroleum-based products, which damage rubber weatherstripping) to maintain quiet, friction-free movement.
5. Check the door’s weatherstripping after installation—if the window is misaligned, adjust the regulator’s mounting bolts slightly to ensure the glass presses evenly against the weatherstripping (prevents water leaks).*

A: Signs of a failing bumper bracket include visible damage or deformation, misaligned bumper panels, unusual noises from the front end, or if the bumper appears loose or sagging on one side.

A: For optimal results, we recommend professional installation. Key considerations include ensuring proper alignment of all mounting points, checking for additional damaged components, and verifying all fasteners are properly torqued to specification.