NISSAN 25368-5L300 Door Switch Rubber Cover

The genuine NISSAN (SKU: 25368-5L300) door switch rubber cover (factory designation: COVER-DOOR SWIT) is a premium quality, original equipment manufacturer part designed to provide external mechanical and environmental protection for the interior lighting and indicator switch (door contact switch) mounted in the door frame. This small yet vital rubber boot shields electrical contacts from external elements.

Function and Importance

The primary function of the door switch protective boot is to create a hermetic or semi-hermetic seal around the electrical switch located in the door pillar. It prevents moisture, condensation, dust, mud, and other contaminants from entering the internal mechanism of the switch. Without adequate protection, switch contacts quickly corrode, which can cause:

• Interior lights staying on continuously or failing to operate entirely.
• Malfunctioning open-door warning indicators on the instrument cluster.
• False alarm triggers or arming errors in the anti-theft alarm system.
• Electrical short circuits or parasitic drain across the contacts.

Technical Specifications and Material Quality

Manufactured to rigorous Nissan quality control standards, this protective boot is crafted from high-grade, ozone- and UV-resistant elastomer (EPDM or specialized silicone-based rubber). This ensures the component retains its flexibility over years of service under extreme weather conditions (both freezing temperatures and intense sunlight) without hardening or cracking.

• Manufacturer: NISSAN (Original Equipment Manufacturer)
• Part Number (SKU): 25368-5L300
• Product Type: Door switch protective rubber / rubber boot
• Material: Weather- and wear-resistant flexible rubber (EPDM)
• Color: Black
• Installation Position: Door pillar / door frame (at driver- or passenger-side door switch)

Signs of Wear and Aging

Over time, rubber components undergo a natural aging process. Replacement of the protective boot is recommended upon noticing any of the following symptoms:

• Cracked, porous, or completely torn rubber surface.
• Hardened rubber that has lost its elasticity and can no longer follow the switch movement.
• Traces of water ingress or moisture around the switch.