Name: Mercedes-Benz Fan speed resistor replacement
Brand: AutoGuru
Rating: 4.0 (2 reviews)

Frequently Asked Questions

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AutoGuru can provide servicing and repair quotes for the majority of passenger vehicles on Australian roads. If you don’t see your vehicle listed, we’re really sorry but at this time we don’t have sufficient details on this vehicle type to provide you with quotes. Please try us again in the future though, as we are always updating our vehicle listings!

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Instantly priced quotes for servicing and repair work via AutoGuru.com.au include parts, labour and GST. Note: Quotes for inspection and diagnostic jobs do not include pricing for parts.

Service providers are advised to contact you directly in order to discuss additional work that is not included in the initial quote.

Inclusions for basic and logbook services can be found on the search results page or the booking finalise page under the ‘What’s included?’ button. Find out more

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If you booked through AutoGuru and your booking has been confirmed, you can reschedule to a new date or time. Simply click the 'manage my booking' link on your booking confirmation email. If you need help email contactus@autoguru.com.au. If you cancel or don't show up and don't reschedule (and you have prepaid in advance), a $20 cancellation fee will apply.

If you’ve booked with a workshop, the service provider will usually require your vehicle for the entire day due to scheduling. If you’ve booked with a mobile provider, you will only be without your vehicle for the time it takes to complete the job. Find out more

Yes! Some service providers can offer a loan car depending on their availability. Find out more

Most service providers also offer either a drop off or pick up service, where they can drop you off at or pick you up from a location within a 5km radius of their business, or a $10 Uber ride voucher. Find out more

For servicing, inspections and select repairs, we can provide instant quotes. However, some tasks require a quote request to be sent to service providers. You will usually receive at least one quote within 24 hours.

If you have sent off a quote request to local service providers through AutoGuru, you can expect to receive up to five quotes back.

Didn’t receive a quote? No worries! Email contactus@autoguru.com.au and we'll see if we can help.

Booking your car service or repair through AutoGuru gives you access to these convenient payment options:

1. Pay upfront and online using your credit or debit card or PayPal
2. Flexible payment options with Afterpay, humm, Zip or PayPal
3. In some instances, you can choose to pay the mechanic when you pick your car up and the service and/or repairs have been completed

Yes, all service providers should provide an invoice when you pick up the car. Find out more

When Do I Need to Replace My Mercedes-Benz Fan Speed Resistor?

The fan speed resistor, also known as a blower motor resistor, is an important part of the vehicles heating and air conditioning (HVAC) system. Many of us rely on the HVAC system working at its best, especially if it is extremely hot or cold outside.

The fan speed resistor is an electrical device used to control the blower fan speed. The blower fan pushes air through the air vents into the cabin of your Mercedes-Benz.

The higher the fan speed, the more power is required to run it. If you select the lowest fan speed, the resistor will be working at its hardest and generating a lot of heat.

Due to this heat, a resistor can fail over time and melt itself and the connections around it. This is more likely if the fan is run on the lowest setting or the fan selection is being toggled between speeds repeatedly.

Corrosion or overheating are the most common reasons for fan speed resistor failure.

When the fan speed resistor malfunctions, you can expect to have issues with the HVAC system and notice the following signs of failure:

Blower fan speed doesn’t change when you select various speeds

The blower fan doesn’t work on low or medium speeds

The blower fan may only work on the highest speed - when the system bypasses the resistor and has a direct circuit with the battery

The more you use your blower fan, the more likely it may wear or overheat. It is designed to last the life of the Mercedes-Benz, but overuse can cause failure.

Let’s be honest, it’s not a ‘must replace item’. You could live without it, as long as you’re not living in a very cold or extremely hot climate.

In saying that, the heater and air conditioner are a ‘nice-to-have' option and, for some, the thought of not being able to use it may cause some minor panic!

If this is you and your Mercedes-Benz AC fan is not working, then book in with an AutoGuru technician today to get you back into your comfort zone.

Frequently Asked Questions

Mercedes-Benz Fan speed resistor replacement

Mercedes-Benz Fan speed resistor replacement

When Do I Need to Replace My Mercedes-Benz Fan Speed Resistor?

Mercedes-Benz Models

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