NO NAME CN0017682670
发动机散热器
等级 E
factory 工厂 / 制造商
location_on Zhejiang, China
sell 单价
$20.85
/ 件
bolt 最小起订量
20 件
schedule 交货时间
30-45 天
package_2 已售
20
Overview & Operating Principle
▲
The 1K0959455CQ is an engine cooling fan assembly with an integrated Fan Control Module (FCM). It serves as the primary radiator cooling fan on PQ35-platform Volkswagen and Audi Group vehicles. Unlike earlier designs with a separate relay, this assembly combines the fan motor and its electronic controller into a single unit mounted directly to the fan shroud.
The FCM receives PWM (pulse-width modulation) signals from the ECU and steplessly adjusts fan speed in proportion to engine coolant temperature, A/C refrigerant pressure, and ambient conditions. This allows precise thermal management across a wide range of operating conditions — from slow creep at low speed to full-speed cooling at high coolant temperatures or maximum A/C load. The integrated design also means that if the control module fails, the entire fan assembly must be replaced as a unit.
Symptoms & Diagnostics
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The FCM is a known wear item on MK5/MK6 VW and PQ35 Audi platforms. Failure typically presents in one of three progressive stages:
- Fan not activating when A/C is switched on — warm air at idle despite compressor running
- Fan running only at full speed (no variable control) — loud constant noise at all engine temps
- Engine overheating at idle or in slow traffic — temperature gauge rising above normal range
- Fan continuing to run for extended periods after engine shutdown
- A/C compressor cutting out to protect the system due to insufficient condenser cooling
P1946 / 18354
Coolant Fan Control Module — Faulty / Open Circuit in Voltage Supply
P0480
Cooling Fan 1 Control Circuit Malfunction
P0481
Cooling Fan 2 Control Circuit Malfunction
P0483
Cooling Fan Rationality Check Failure
00588 / P1380
Radiator Fan — Implausible Signal
VAG-specific codes can be read with VCDS (VAG-COM) or OBD-II scanner with extended manufacturer codes.
Logistics & Customs
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| Net Weight | 2.2 kg |
| Minimal Order | 20 pcs |
| Production Time | 30–45 days |
| Country of Origin | Made in China, Brand: VAG/PORSCHE OEM ref. |
Vehicle Compatibility
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Based exclusively on OEM part numbers in the Application table on this page. Always verify by OEM number before ordering.
| Brand | Model | Years | Key OEM Ref. |
|---|---|---|---|
| VW | Golf V (1K) — all engines | 2003–2009 | 1K0959455CQ, 1K0959455FR |
| VW | Golf VI (5K) — all engines | 2008–2013 | 1K0959455FJ, 1K0959455FE |
| VW | Golf Plus (5M) — all engines | 2005–2014 | 1K0959455CQ |
| VW | Jetta V (1K) — all engines | 2005–2010 | 1K0959455CQ, 1K0959455FR |
| VW | Passat B6 (3C) — all engines | 2005–2010 | 3C0959455F |
| VW | Passat B7 (3C) — all engines | 2010–2015 | 3C0959455F |
| VW | Passat CC (35) — all engines | 2008–2016 | 3C0959455F |
| VW | Touran (1T) — all engines | 2003–2015 | 1K0959455CQ |
| VW | Eos (1F) — all engines | 2006–2015 | 1K0959455FR |
| VW | Caddy III (2K) — all engines | 2004–2015 | 1K0959455CQ |
Installation Tips
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| 1 | Allow the engine to cool completely before starting work. The radiator fan can activate automatically even with the ignition off on these platforms — disconnect the negative battery terminal before touching the fan assembly. |
| 2 | Remove the front bumper cover or grille panel for easier access on most Golf/Jetta applications. On Passat B6/B7 the upper engine cover and top radiator bracket must be removed. Refer to the relevant workshop manual for your model. |
| 3 | Disconnect the main wiring connector from the fan control module before unbolting the shroud. The connector is typically a 4+2 pin plug located on the side of the FCM housing. Press the locking tab and pull straight out — do not twist. |
| 4 | Unbolt the fan shroud from the radiator bracket — typically 3–4 x T25 Torx or 10 mm bolts. Lift the assembly straight up and out of the lower locating clips. Take care not to damage the radiator fins during removal. |
| 5 | Fit the new assembly in reverse order. Seat the lower locating clips first before tightening the upper bolts. Torque shroud bolts to 8–10 Nm. Reconnect the wiring connector until it clicks. |
| 6 | Reconnect the battery and verify operation with a VCDS scan or OBD-II reader. Clear any stored fault codes. Run the engine at idle and turn on A/C — the fan should activate within 30–60 seconds at variable speed, not full blast. |
| 7 | No coding or adaptation required after replacement on standard petrol and diesel variants. On some DSG/automatic transmission variants, check for 09 — Electrics module in VCDS after replacement to confirm no new faults. |
Frequently Asked Questions
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Can I replace only the Fan Control Module without replacing the whole fan?
On the original OEM design, the FCM is not serviceable separately — it is potted (sealed) inside the fan motor housing. This part supplies a complete fan assembly with integrated FCM, which is the correct and only recommended replacement method.
Does this fit both petrol and diesel engines?
Yes. The fan assembly is engine-type agnostic — it is controlled by the ECU via PWM signal regardless of fuel type. It fits all petrol and diesel variants of the listed models, including TDI, FSI, TFSI, and TSI engines.
Is coding or ECU adaptation required after fitting?
No coding is required for most variants. The FCM is a plug-and-play replacement. After installation, clear any stored DTCs with a scanner and verify fan operation. On some vehicles with automatic climate control, a VCDS output test is recommended to confirm proper PWM response.
What is the difference between 1K0959455CQ, FR, FJ and FE?
These are successive supersession numbers for the same assembly — each revision replaced the previous in the VAG parts system. The physical dimensions, connector pinout (4+2 pins), and mounting are identical. All four numbers refer to the same functional replacement unit.
Is custom or white-label packaging available?
Yes. Custom packaging and white-label options are available for wholesale orders (MOQ 20 pcs). Use the inquiry form on this page to discuss print specifications and lead times with our team.
Frequently Replaced Together
directions_car 车辆适配
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directions_car 应用（交叉参考）
4
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5.0
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1604
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2019
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语言CHINESE
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风扇叶片
空调冷凝器风扇
暖风鼓风机
发动机散热器
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No. 128, Binhai Rd, Longwan, Wenzhou, Zhejiang, China
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schema Parts diagram — VAG 06B103217M
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