Shopping.co.uk

Denso Interior Blower Resistor - DRS01004

Denso Interior Blower Resistor - DRS01004

The Denso Interior Blower Resistor, model DRS01004, is an essential automotive component designed ...

Best current price£15.76from eBay

Best offers

Shopping.co.uk recommended and popular offers

Lowest priceMost popular
eBay£15.76Visit shop

DENSO DRS01004 Pre-resistor, electro motor radiator fan for ALFA ROMEO,FIAT

Visit shop

All Offers

12 offers from £15.76 - £19.99

View price history by clicking the chart icon.

eBayDENSO DRS01004 Pre-resistor, electro motor radiator fan for ALFA ROMEO,FIAT
£5.90 delivery
£15.76
Visit shop
My Motor WorldDenso Drs01004 Thermal Resistor
Free delivery in 1–3 days
£19.99
Visit shop

Product Information

Full details

The Denso Interior Blower Resistor (DRS01004) is designed for vehicle owners experiencing inconsistent or malfunctioning HVAC fan speeds, offering a reliable OE-quality solution to restore cabin climate control. It is ideal for DIY mechanics and professional technicians looking to ensure the blower motor operates exactly as the manufacturer intended; however, users should be aware that replacing this part often requires access to cramped areas under the dashboard or behind the glove box.

All features

Model Part NumberDRS01004
BrandDENSO

Extended Product Information

FAQs

How do I know if the blower resistor is the problem?

If the fan speeds are inconsistent or only work on the highest setting, the resistor is usually the component that has failed.

Is this a direct replacement for the original part?

Yes, as an OE-standard part, the DRS01004 is designed for a direct-fit replacement without modifications.

Do I need special tools to replace it?

Generally, you only need standard screwdrivers or a small socket set to remove the access panels and mounting screws.

Can I repair the resistor instead of replacing it?

Resistors are generally sealed units designed for replacement; repair is not recommended due to safety and thermal concerns.

Will this fix a noisy blower motor?

No, a noisy motor usually indicates a mechanical failure in the motor bearings or debris in the fan cage, not an electrical resistor issue.

Troubleshooting

Fan only works on high speed

This is a classic sign of a failed thermal fuse or resistance coil within the unit; replacement is required.

No air flow on any speed

Verify the blower motor itself is functional and check the fuse box for blown fuses before assuming the resistor is the cause.

Resistor fails shortly after installation

Check the blower motor for debris or mechanical resistance that may be drawing too much amperage and causing the new resistor to overheat.

Pros and Cons

Pros

  • High-quality OE manufacturing standards
  • Reliable and consistent fan speed regulation
  • Excellent durability against thermal stress
  • Precise fitment reduces installation errors

Cons

  • Requires access to tight under-dash or glove box areas
  • Electrical diagnostics may be needed to confirm failure
  • Not compatible with all vehicle makes and models

Setup, Compatibility & Care

Before starting, consult your vehicle's service manual to locate the blower resistor, which is commonly situated near the blower motor assembly, often behind the passenger-side glove compartment. Ensure the ignition is off and the battery is disconnected for safety. For installation: remove the retaining screws, disconnect the electrical harness, swap the old unit for the new Denso resistor, and reconnect the harness. No special software programming is required. To prolong the life of the new component, ensure the cabin air filter is clean, as restricted airflow forces the blower motor to work harder, which can overheat the resistor.

Price History

DatePrice
Visit shop