Heavy Duty Truck A/C Heater Climate Control Unit OEM 21318123 85115380 Replacement For Volvo VNL Cab HVAC Control Panel Plug And Play No Programming

Product Appearance Description

1.Overall Structure: Square integrated matte black control panel, industrial scratch-resistant ABS shell, two metal fixing tabs at top and bottom for dashboard mounting, fully match original truck cab interior size.

2.Control Layout: 3 large rotary adjustment knobs + 2 vertical rectangular function buttons, symmetrical layout consistent with original factory design.

3.Knob Marking Details: Top left knob printed blue cold and red hot temperature scale for cold/hot air adjustment; top right knob marked with air outlet mode icons; middle main knob with multi-speed fan gear scale. All knobs adopt anti-slip grain to avoid slippery operation during bumpy driving.

4.Button Marking Details: Left vertical button printed “AC” logo for refrigeration compressor switch; right vertical button printed rear windshield defrost heating icon.

5.Internal Circuit Structure: Thick copper contact PCB board with shock absorption and dust isolation seal structure, effectively isolate cab dust, oil mist and vibration.

6.Rear Connector: 1:1 molded original wiring plug, pin definition completely consistent with factory harness, no wire modification needed during installation.

Product Function Description

1.Stepless Cold & Hot Air Temperature Regulation: Top left temperature knob realizes continuous temperature switching, adjust cabin air temperature freely according to driver demand.

2.Multi-Mode Air Outlet Switching: Top right mode knob supports face air, foot air, front windshield defrost three outlet modes to adapt different driving scenarios.

3.Multi-Speed Blower Fan Control: Middle fan speed knob adjusts blower output volume in multiple gears, control strong or weak air supply inside cab.

4.Independent A/C Compressor Control: Left AC button single-key control refrigeration system start and stop, quickly turn cooling function on or off.

5.Rear Windshield Defrost & De-Ice Function: Right defrost button activates rear window heating circuit, rapidly eliminate fog and ice to restore clear rear vision.

6.Anti-Vibration & Dust-Proof Circuit Design: Internal circuit with shockproof, dustproof and oil-proof protection, stable continuous operation under harsh long-haul truck working environment.

7.Plug-and-Play Direct Replacement: After connecting vehicle wiring harness, all HVAC functions work normally without ECU programming.

Applicable Models

Model Number	OEM Part Numbers	Compatible Truck Model	Production Year Range
LD-31023	21318123 / 85115380 / 20853478 / 21272395 / 20508582 / 21318121	Volvo VNL64T Heavy Tractor	2004 – 2018
LD-31023	21318123 / 85115380 / 20853478 / 21272395 / 20508582 / 21318121	Volvo VNL760 Heavy Tractor	2004 – 2018
LD-31023	21318123 / 85115380 / 20853478 / 21272395 / 20508582 / 21318121	Volvo VNL860 Heavy Tractor	2004 – 2018

Parameter

English Item	English Full Spec Details
Model No.	LD-31023
OEM Interchange Part Number	Interchangeable multi OE numbers: 21318123, 85115380, 20853478, 21272395, 20508582, 21318121
Full Product Name	Truck HVAC Heater & Air Conditioning Climate Control Panel Assembly
Exact Compatible Vehicle & Production Year	Volvo VNL Series Heavy Duty TruckVNL64T / VNL760 / VNL860: 2004–2018
Working Voltage	DC 24V Standard Commercial Heavy Truck Voltage
Raw Material Configuration	High-toughness black ABS housing, wear-resistant anti-slip rotary knobs, thickened copper contact PCB circuit board, dustproof & oilproof internal electronic components, original standard truck wiring plug connector
Installation Mode	Direct Plug & Play Replacement, No ECU Coding / Programming Required After Installation
Factory Warranty	12 Months Global Factory Quality Warranty

Product Details

Packaging and delivery

Item	Value
Selling Units	Single item
Single package size
Single gross weight

Product Specifications and Trade Terms

Item	Specification/Details
Warranty Period	12 months or 100,000 km (whichever comes first)
Payment Terms	T/T, PayPal, Western Union
Port of Loading	Ningbo Port or Shanghai Port
Lead Time	7-15 working days after deposit
Packing	50 pcs per carton with foam
Shipping Method	By sea / air / express (DHL/FedEx/UPS)
Sample Policy	Free samples, buyer pays freight
After-Sales Support	Itemcement for defective items
Certification	ISO/TS 16949:2009

Supplementary Note

1. Model Compatibility Distinction

LD-31023 (Multi interchange OEM codes) only fits Volvo VNL series heavy-duty tractors produced 2004–2018. Not applicable to Volvo passenger SUVs XC60/XC90, Volvo FH/FM trucks, and other heavy truck brands including Scania, MAN, Iveco, Freightliner, Kenworth.

2. Pre-delivery Full QC Test Items

50,000 cycles knob rotation durability test
High-low temperature thermal shock aging test
Dust & waterproof spray sealing performance test
24V truck voltage overload protection test
Simulated road bump vibration endurance test

3. Supply Advantage

Stable long-term ready stock, support small sample trial orders and full-container bulk export. Main supply cross-border auto parts wholesalers, overseas heavy truck repair garages and auto parts retail stores.

4. Step-by-Step Plug & Play Installation Instruction

Pry off dashboard decorative trim panel with plastic pry tool;
Unplug 24V wiring harness connector behind climate control panel;
Remove mounting screws and take out damaged original panel;
Align new panel with mounting position, lock screws and reconnect wiring harness;
Reinstall dashboard trim panel, ready for use without ECU programming.

5. Common Replacement Failure Scenarios

Knobs stuck or invalid, unable to adjust temperature, fan speed or air outlet mode;
A/C button malfunction, compressor cannot start, vehicle without refrigeration effect;
Rear defrost button no response, rear windshield cannot remove fog or ice;
Internal circuit short circuit, fan speed out of control, cold/hot air adjustment disorder;
Original panel shell cracking, knob printing wear, aging damage.

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