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SmartSense Heater/Blower Fan Motor Resistor for Citroen C4 - 6436.81 643681
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SmartSense™ Blower Motor Resistor/Control Module
OEM quality heater resistor/control module to repair broken heating in cars. Comes with 3 Year Warranty.
A blower motor contains a set of terminals designed to generate voltage in proportion to electrical current. These resistors allow the blower motor to function at lower speeds. If the blower motor resistor fails, the blower motor only functions at its highest speed and cannot decelerate meaning it will only work at full speeds. Replacing the blower motor resistor typically corrects this problem
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Features and benefits of SmartSense Resistors
OEM Design or Improved Design when OEM units are known to have functional limitations.
OEM or better materials.
Manufactured in TS16949 quality certified factory. TS16949 is a requirement of all OEM auto manufacturers.
Rigid Life Testing to confirm the longest life possible.
Other testing includes salt spray, thermal shock, and vibration.
On vehicle testing to confirm fitment and function in a “real world” environment. .
Compatibility
| Model | Comments | Part Number | Advert |
|---|---|---|---|
| Please compare the part number with your original part to ensure correct operation and fitment. A LOT OF vehicles use more than one part number depending on configuration. If in doubt please email us your chassis/VIN number and we will let you know the correct part you need for your car. | |||
| C4 | Additional Heater since MAD 10654UW | 6436 27 | N/A |
| C4 | Additional Heater since MAD 1101877 | 6436 67 | N/A |
| C4 | Single Air Conditioning Since MAD 1101877 | 6445 XE | Click Here |
| C4 | Since MAD 1005288 Or Until MAD 12456Uw | 6445 XE | Click Here |
| C4 | Since MAD 12457Uw | 16 068 600 80 | N/A |
| C4 | Without Additionnal Heating And Single Air Conditioning Since MAD 10654Uw Until MAD 11136Uw | 6480 10 | N/A |
| C4 | Without Additionnal Heating And Single Air Conditioning Since MAD 11137Uw | 6436 81 | THIS |
| C4 | Automatic Air Conditioning Since MAD 1101877 Or Since MAD 10654Uw Or Since MAD 1007388 | 6441 S7 | Click Here |
| C4 | 5 Door Saloon And Without Additionnal Heating And Single Air Conditioning Since MAD 11505Uw | 6441 CK | Click Here |
| C4 PICASSO | Automatic Air Conditioning | 6441 X3 | N/A |
| C4 PICASSO | Until RPO 11437 | 6441 W9 | N/A |
| C4 PICASSO | Since RPO 11438 | 6441 CE | N/A |
| C4 PICASSO (B78) | 16 091 711 80 | N/A | |
| C4 PICASSO (B78) | With Additional Pulse | 16 097 222 80 | N/A |
| C4 (B7) - DS4 | Automatic Air Conditioning Until RPO 13842 | 6441 AF | Click Here |
| C4 (B7) - DS4 | Automatic Air Conditioning Since RPO 13843 | 6441 FB | Click Here |
Interchangeable Part Numbers:
Citroen: 6436.81 / 6643681
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There are numerous guidelines and instructions on owner forums, the internet and on YouTube. However as this is a service part we recommend installation by a qualified professional.
When installed it is IMPERATIVE to monitor the temperature of the resistor on first use. Sometimes a blown resistor can be a symptom of the problem and not the problem itself, and replacing it in this scenario will only cause it to blow again. If the resistor starts heating very quickly and getting too hot IMMEDIATELY SWITCH OFF YOUR CAR and diagnose the problem elsewhere. Resistors usually blow when they get too hot and this happens when too much current is being drawn from then. This can happen if there is an issue with the blower motor or even the ignition system, or a fault with the wiring. Also please check your fan is not jamming because of dirt or grease build up, or a failure in the bearings. This will also cause the fan to try to draw more power in an attempt to spin, causing the resistor to overheat and fail.
If replacing the resistor (and it is not getting hot) your heater still does not work, please check the thermo fuse or carry out further diagnosis elsewhere for a fault.
When installed it is IMPERATIVE to monitor the temperature of the resistor on first use. Sometimes a blown resistor can be a symptom of the problem and not the problem itself, and replacing it in this scenario will only cause it to blow again. If the resistor starts heating very quickly and getting too hot IMMEDIATELY SWITCH OFF YOUR CAR and diagnose the problem elsewhere. Resistors usually blow when they get too hot and this happens when too much current is being drawn from then. This can happen if there is an issue with the blower motor or even the ignition system, or a fault with the wiring. Also please check your fan is not jamming because of dirt or grease build up, or a failure in the bearings. This will also cause the fan to try to draw more power in an attempt to spin, causing the resistor to overheat and fail.
If replacing the resistor (and it is not getting hot) your heater still does not work, please check the thermo fuse or carry out further diagnosis elsewhere for a fault.