AC Fan Control Module Repair Cost Guide
Basic Fan Control Module Repair
Typical repair time: 1-1.5 hours
Estimated cost: $125-$187.50
Common issues: Simple component replacement, basic circuit repair, connector repairs
Intermediate Fan Control Module Repair
Typical repair time: 2-2.5 hours
Estimated cost: $250-$312.50
Common issues: Multiple component failures, circuit board traces repair, moderate water damage repair
Complex Fan Control Module Repair
Typical repair time: 3-4 hours
Estimated cost: $375-$500
Common issues: Extensive water damage, severe electrical damage, multiple circuit board repairs, microprocessor replacement
Note: These are estimated costs based on typical repair scenarios. Actual repair time and cost may vary depending on the specific make, model, and extent of damage. A detailed diagnosis will be performed to provide an accurate quote before proceeding with repairs.
Additional Costs May Include:
- Replacement components
- Circuit board materials
- Testing and calibration time
- Emergency service fees (if applicable)
AC Fan Control Module Repair Procedures
Ford AC Fan Control Module
Common Symptoms:Fan only works on high speed, intermittent fan operation, or complete fan failure
Repair Steps:
- Remove module from vehicle (typically located near the radiator or behind the glove box)
- Disassemble module housing carefully to access circuit board
- Inspect for burnt or corroded resistors and transistors
- Replace damaged components, particularly the power transistors and resistors
- Clean circuit board of any corrosion
- Apply new thermal paste to power transistors
- Reassemble module with new weather sealing
- Test functionality before reinstallation
BMW AC Fan Control Module
Common Symptoms:Fan speeds inconsistent, complete failure, or burning smell
Repair Steps:
- Remove module from vehicle (usually located in engine bay near coolant reservoir)
- Open module housing using specialized tools
- Test and identify failed components on circuit board
- Replace faulty MOSFETs and capacitors
- Repair any damaged solder joints
- Clean and reapply thermal compound
- Update firmware if applicable
- Reassemble with new gasket
- Perform operational testing
Mercedes-Benz AC Fan Control Module
Common Symptoms:Fan stuck on single speed, complete failure, or electrical burning odor
Repair Steps:
- Remove module (typically behind dashboard or in engine compartment)
- Carefully separate module housing
- Inspect for water damage and burnt components
- Replace damaged resistors and relays
- Repair cracked solder joints
- Clean circuit board thoroughly
- Apply new thermal paste to power components
- Install new moisture barrier
- Test all fan speeds before reinstallation
Dodge/Chrysler AC Fan Control Module
Common Symptoms:Fan not responding to temperature changes, works intermittently, or complete failure
Repair Steps:
- Remove module from vehicle (usually near radiator)
- Open module case carefully
- Test for failed components
- Replace damaged transistors and resistors
- Repair any broken solder connections
- Clean corrosion from board
- Apply new heat sink compound
- Seal module with new weatherproofing
- Verify proper operation
Important Note:All repairs include a thorough testing phase and come with our standard warranty. Specific repair steps may vary based on vehicle model and year. Professional repair is recommended due to the complexity of these modules.
Understanding AC Fan Control Modules

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Common Failure Symptoms of AC Fan Control Module
AC Fan Control Module: Signs of Failure & Maintenance Guide
Common Signs of Fan Control Module Failure:
1. Inconsistent Fan Speeds
• Fan runs at incorrect speeds regardless of settings
• Random speed fluctuations
• Fan stuck at single speed
2. Complete Fan Failure
• Fan won't turn on at all
• Fan stops working intermittently
• No response to temperature changes
3. Electrical Issues
• Burning smell from the control area
• Visible damage to module
• Blown fuses related to the fan circuit
4. Strange Noises
• Clicking sounds from the control module
• Buzzing or humming from the module area
Recommended Maintenance Schedule:
Annual Inspection
• Visual check for corrosion or damage
• Testing of all fan speeds
• Verification of proper temperature response
Every 2-3 Years
• Professional diagnostic testing
• Cleaning of module connections
• Resistance testing of module
Every 5-7 Years
• Consider preventative replacement
• Full system evaluation
• Update to newer module if available
Note: Actual maintenance intervals may vary based on usage, climate, and manufacturer recommendations. Always consult your vehicle's manual for specific guidance.
Emergency Maintenance Required If:
• Check Engine light appears
• AC performance suddenly decreases
• Unusual electrical problems occur
• Strange noises emerge from the fan area
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.