Dongfeng KR truck spare parts DPF regeneration switch assembly 3750265-C5100

Built to manage the DPF (Diesel Particulate Filter) regeneration process, this switch assembly supports both manual and semi-automatic control to adapt to diverse working conditions. When the ECU detects DPF soot loading ≥45g/L, the switch’s green LED indicator illuminates, prompting the driver to initiate manual regeneration via a single press. For high-load long-haul scenarios, a 3-second long press activates semi-automatic mode, allowing the ECU to complete regeneration when engine conditions (temperature ≥200℃, speed ≥60km/h) are met. The switch features a fail-safe design: it automatically cancels regeneration if the brake pedal is pressed or vehicle speed drops below 30km/h, preventing overheating. Its 30ms response time ensures precise signal transmission, reducing DPF clogging risks by 40%

Engineered for the rigorous operating environment of Dongfeng KR trucks (urban distribution, inter-city logistics), the switch assembly boasts exceptional structural durability. The housing is crafted from flame-retardant ABS+PC alloy (UL94 V-0 rating), resisting impact from accidental knocks and thermal deformation at 85℃. Internal electrical contacts use silver-plated copper (AgCu30) with a contact resistance ≤0.01Ω, ensuring stable conductivity after 150,000 on-off cycles—twice the lifespan of standard copper contacts. A 304 stainless steel spring provides consistent button rebound force (2.5±0.3N), avoiding jamming even after long-term use. The assembly passes 500,000 vibration cycles (5-2000Hz, ISO 16750-3) with no structural damage, matching the truck’s 1 million km service life expectation

Designed to adapt to Dongfeng KR’s diverse operating regions (humid south, dusty northwest, coastal high-salt areas), the switch assembly delivers reliable environmental resistance. It achieves IP67 waterproof and dustproof ratings: the button interface uses a dual-lip fluororubber (FKM) seal that prevents water intrusion even during high-pressure cleaning. The wiring harness features oil-resistant PVC insulation (resistant to diesel, engine oil, and urea) with no volume change after 72-hour immersion in alkaline solution. The connector’s tinned copper pins resist corrosion, passing 1000-hour salt spray testing (ASTM B117) with no red rust. The assembly operates stably in extreme temperatures from -40℃ (northeast China winters) to 85℃ (cab summer heat), ensuring year-round reliability

Optimized for fleet maintenance efficiency and driver convenience, the switch assembly features a user-centric design. Panel mounting requires only 2 M4×10 self-tapping screws that align with the instrument panel’s original threaded holes, enabling a single technician to complete replacement in 12 minutes with a standard Phillips screwdriver. The button is labeled with clear DPF regeneration icons and color-coded LEDs (green for ready, amber for in-progress, red for fault), ensuring intuitive operation for drivers. The pre-wired harness includes color-coded wires (red=positive, black=ground, blue=signal) and a plug-and-play connector, eliminating wiring errors. With no moving parts requiring lubrication and a sealed structure, it demands no regular maintenance—reducing fleet downtime and operational costs