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Heavy Truck Dongfeng Truck New Intermittent Wiper Relay Assembly 3735020-C0100

The Wiper Intermittent Relay Assembly (Part No. 3735020-C0100) is an OEM-specified electronic control module designed for use in Dongfeng commercial vehicles, particularly heavy- and medium-duty trucks such as the Tianlong, Tianjin, and Hercules series. Officially known as the Wiper Interval Controller, this component serves as the intelligent brain behind the windshield wiper system, enabling precise intermittent operation, automatic park (return-to-rest), and washer-activated wiper cycling.

Operating on a 24V DC system, it features a hybrid design combining solid-state timing circuits with electromagnetic relay switching, ensuring reliable performance under harsh environmental conditions—including extreme temperatures, vibration, and electrical noise from other vehicle systems.
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  • 3735020-C0100

  • Dongfeng

Attribute Specification
Product Name Wiper Intermittent Relay / Wiper Control Module
Manufacturer Dongfeng Commercial Vehicles Co., Ltd. (OEM)
Primary Part Number 3735020-C0100
Alternative Names Intermittent Wiper Relay, Wiper Timer Unit, Windshield Wiper Controller
Voltage Rating 24V DC (standard for Chinese heavy-duty trucks)
Connector Type 13-pin rectangular plug (male/female configuration)
Internal Structure Hybrid IC + Electromagnetic Relay combination
Housing Material Flame-retardant engineering plastic (UL94-V0 rated)
Mounting Location Inside cabin — typically installed in central fuse/relay box near passenger side
Functionality Controls intermittent sweep, auto-reset (parking), and wash/wipe interlock
雨刮继电器-3


雨刮继电器-2


Parameter Value / Detail
Operating Voltage 24V DC nominal (range: 18–32V)
Pin Configuration 13-Pin standard layout (specific pinout defined by Dongfeng)
Intermittent Cycle Range Adjustable interval of ~4–6 seconds between sweeps (fixed logic)
Park Function Ensures wipers return to bottom dead center after switch-off
Washer Interlock Automatically triggers 2–3 wipes when washer fluid is activated
Control Logic Electronic timer circuit with relay output stages
Environmental Resistance
- Operating Temperature -40°C to +85°C (-40°F to +185°F)
- Vibration Compliance Meets QC/T 417 and GB/T 28046 standards
Electrical Life > 500,000 cycles (switching endurance)
Insulation Resistance ≥ 100 MΩ at 500V DC
Weight Approx. 120–180 g


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