Electric Fan Motor Relay Repair Costs
Basic Relay Replacement
A straightforward relay replacement typically takes 0.5-1 hour of labor.
Estimated cost: $62.50-$125 (labor) + $30-$75 (parts)
Total range: $92.50-$200
Complex Relay System Diagnosis and Repair
When multiple relays or wiring issues are involved, repair time can extend to 1.5-2 hours.
Estimated cost: $187.50-$250 (labor) + $50-$150 (parts)
Total range: $237.50-$400
Complete Fan Control Module Replacement
For cases requiring full module replacement, typically takes 2-3 hours.
Estimated cost: $250-$375 (labor) + $150-$300 (parts)
Total range: $400-$675
*Please note: These are estimated costs. Final pricing may vary based on vehicle make/model and specific repair requirements. All repairs include diagnostic testing and quality assurance checks.
Additional Considerations:
- Emergency or after-hours service may incur additional charges
- Some vehicles require specialized parts that may affect total cost
- Warranty coverage is available on parts and labor
Electric Fan Motor Relay Repair Procedures
Single Fan Relay Repair
Common Symptoms:Fan doesn't turn on, intermittent operation, or overheating engine
Repair Steps:
- Locate the relay (usually in the engine compartment fuse box)
- Test relay function using a multimeter to check continuity
- Inspect relay terminals for corrosion or damage
- Check voltage at relay terminals with engine running
- Replace relay if faulty
- Test fan operation after replacement
Dual Fan Relay Repair
Common Symptoms:One or both fans not working, fans running at wrong speeds
Repair Steps:
- Identify primary and secondary fan relays
- Test both relays with multimeter
- Check wiring harness for both fans
- Verify proper voltage at both relay terminals
- Replace faulty relay(s)
- Test both fans at different speeds
- Verify proper temperature-triggered operation
Variable Speed Fan Relay Repair
Common Symptoms:Fan stuck at one speed, no speed variation, complete failure
Repair Steps:
- Diagnose control module function
- Test relay resistance values
- Check temperature sensor connections
- Verify PWM signal from control module
- Replace relay module if faulty
- Program new relay if required
- Test fan operation at various speeds
Important Notes:
- Always disconnect battery before working on electrical components
- Use OEM or high-quality replacement parts
- Verify proper coolant level after repairs
- Test system thoroughly before returning vehicle to service
Note: These procedures may vary by vehicle make and model. Always consult your vehicle's service manual for specific instructions.
Understanding Electric Fan Motor Relays

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Common Failure Symptoms of Electric Fan Motor Relay
Electric Fan Motor Relay: Signs of Failure and Maintenance Guide
Common Signs of Electric Fan Motor Relay Failure
1. Engine Overheating
One of the most obvious signs of a failing fan relay is when your engine temperature rises above normal, especially when idling or in slow-moving traffic.
2. Fan Doesn't Turn On
If your cooling fan doesn't activate when the engine reaches its normal operating temperature, this could indicate a relay failure.
3. Fan Runs Constantly
When the relay gets stuck in the "on" position, the fan will continue running even after the engine is turned off, potentially draining your battery.
4. Clicking Sounds
Unusual clicking sounds from the relay area might indicate the relay is struggling to function properly.
Maintenance Schedule
Regular Inspection:
• Visual inspection every 30,000 miles
• Testing of relay function during routine maintenance
• Checking for corrosion or damage every 2 years
Replacement Guidelines:
• Typically, fan relays don't have a specific replacement interval
• Replacement is usually performed only when signs of failure appear
• Preventive replacement might be recommended at 100,000 miles in harsh conditions
Professional Testing:
• Annual electrical system check recommended
• Relay testing during routine cooling system service
• Voltage drop testing every 60,000 miles
Important Note: These are general guidelines. Specific maintenance schedules may vary based on vehicle make, model, and operating conditions. Always consult your vehicle's manual or a certified technician for precise maintenance requirements.
How It Works
- Get a quote online or set-up a time to have your vehicle looked at.
- Pick time slots that work for you, easily, online.
- We will confirm appointments and send reminders.
- Our mechanics bring everything that is needed to you.
- All you have to do is provided a safe area for the work to be performed.
What we need from you
- A safe place to work on your vehicle
- No working on the side of busy roads
- No working on unstable or steep surfaces.
- We do not perform repairs during severe weather.
- Authorization from a property owner or management.
- Repair work done in a parking lot or at your requires permission.
- We do not do repairs in areas restricted by law.
Common Questions
Service Area
Our primary service area is greater Grand Rapids and includes Comstock Park, East Grand Rapids, Grandville, Kentwood, Walker, and Wyoming
Our secondary service area is provided by our Belding location and includes: Belding, Greenville, Ionia and the sorrounding areas.
Contact us if you have any questions about where we provide services.