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Map Controlled Thermostat - MAHLE - TM 3

Map Controlled Thermostat - MAHLE - TM 3

Ensure optimal engine cooling performance with this high-quality map-controlled thermostat from MA...

Best current price£60.45from eBay

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eBayThermostat TM 3 105 MAHLE for AUDI SEAT
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Product Information

Full details

The MAHLE TM 3 Map-Controlled Thermostat is designed for vehicle owners and mechanics seeking a reliable, high-precision cooling system component that adheres to original equipment (OE) standards. By maintaining an accurate operating temperature of 100 degrees Celsius, this thermostat improves engine efficiency and longevity; however, users must strictly verify vehicle compatibility by part number before installation to ensure the map-controlled electronic integration matches their engine's specific cooling requirements.

All features

Model Part Number3
BrandMahle

Extended Product Information

FAQs

What does map-controlled mean?

It means the thermostat is electronically managed by the vehicle's computer, allowing it to open at different temperatures based on engine load rather than just coolant temperature.

Is the seal included with the TM 3?

Yes, the product includes the necessary seal to ensure a perfect fit and prevent leaks during installation.

What is the opening temperature of this thermostat?

The MAHLE TM 3 is calibrated for an opening temperature of 100.0 degrees Celsius.

Can I use this on any car?

No, you must verify the part number (TM 3) against your specific vehicle make, model, and engine specifications before purchase.

Do I need to bleed the coolant after installation?

Yes, air trapped in the cooling system after a thermostat change can cause overheating and heater core failure. Always follow the proper bleeding procedure.

Troubleshooting

Engine overheating shortly after replacement

Air pockets in the cooling system are common; perform the vehicle-specific coolant bleeding procedure again to ensure the system is fully purged.

Check engine light (CEL) regarding thermostat circuit

Check the electrical connector to the map-controlled unit for corrosion, security, and ensure the part number is compatible with your vehicle's ECU.

Coolant leak at the housing

Verify the seal is seated correctly and the housing bolts are torqued to factory specifications. Ensure the mating surface was cleaned of old gasket material.

Pros and Cons

Pros

  • Meets or exceeds strict OEM quality requirements
  • Includes necessary seal for a leak-free installation
  • Precision-engineered for consistent 100.0°C operation
  • Trusted reliability from a world-renowned manufacturer

Cons

  • Requires precise part number matching to avoid system errors
  • Installation requires draining and refilling the cooling system
  • Map-controlled units are more complex than standard mechanical thermostats

Setup, Compatibility & Care

Installation of the TM 3 requires basic automotive mechanical knowledge and access to the vehicle's cooling system.

  1. Compatibility: Before ordering, cross-reference the `TM 3` part number with your vehicle's VIN or engine code.
  2. Preparation: Allow the engine to cool completely before opening the cooling system to prevent burns from pressurized hot coolant.
  3. Replacement: Drain the system sufficiently to prevent spillage. When removing the old thermostat, note the orientation of the housing and ensure the mating surface is clean and free of old gasket residue.
  4. Sealing: Use the provided seal, ensuring it is seated perfectly in the groove. Do not overtighten housing bolts, as this can crack plastic housings or warp metal ones.
  5. Air Purging: After installation, refill the coolant using the manufacturer-recommended fluid and perform the correct bleed procedure to remove trapped air, which can cause erratic temperature spikes.

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