Porsche 911 964/993 - HVAC Servo-Motor Repair patch

Is your 911’s ventilation no longer working properly?
Here’s the solution to the common servo motor failure!

This repair patch enhance the reliability and restores your servo motors by replacing their defective conductive tracks. Installation is simple: just stick it onto the board using the included adhesive, then make three solder points. A PDF tutorial is provided, and a repair service is also available.

🔧 Technical Explanation

Porsche 911 964 and 993 models are equipped with five flaps that regulate the flow of hot and cold air in the cabin, each controlled by a servo motor.

Its rotation is limited by a system of brushes rubbing against conductive tracks, through which the motor’s power current flows.

Repeated friction, combined with the poor conductivity of the tracks and the high current passing through them, generates heat and accelerated wear until they eventually fail to conduct electricity, which locks the servo-motor into place. 

This corrective patch covers the original tracks with new, perfectly conductive tracks, fully restoring their operation.

• 🔧 Tested over 3,000 complete cycles
• 🛠️ 2-year warranty
• ✅ Restores optimal lifespan to your servo motors

📦 Available Options:

Check the marking on your servo motor’s casing to choose between the 60° or 130° version. You can also opt for the complete kit, which allows you to repair all five servo motors.

🔧 Optional repair service:

After placing your order, you will receive shipping instructions within 48 hours. Uninstall the servo(s) and ship the unit with the carrier that works best for you. Please note that any customs duties or fees will also be your responsibility.
We take care of the rest; your repaired and lubricated servo motors will be returned to you within 10 business days.

Feel free to reach out at contact@80s.engineering for any additional information.
You can check out my instagram at @80s.engineering to check out my other works!
Thank you 🙏