Restore Your Tesla Model 3 Cooling System Performance
The auxiliary coolant pump is a critical component of your Tesla Model 3 thermal management system. It ensures proper circulation of coolant to regulate the temperature of the battery, drive unit, inverter, and HVAC system.
A failing coolant pump can cause overheating, reduced performance, or thermal system warnings. Replacing it restores proper cooling efficiency and helps maintain safe vehicle operation.
This replacement auxiliary coolant pump is engineered for precise fitment and reliable performance, matching OEM specifications for seamless installation.
Common Symptoms of a Failing Coolant Pump
If your pump is failing, you may experience:
• Thermal system warning messages
• Reduced vehicle performance
• Poor cabin heating or cooling
• Coolant circulation faults
• Unusual noise from front compartment
Replacing the pump can restore proper coolant flow and prevent further system damage.
OEM-Level Fit and Performance
Designed to match OEM part number 1088245-00-K, this pump ensures:
• Exact connector compatibility
• Correct mounting alignment
• Proper coolant flow rate
• Plug-and-play installation
No coding or modification required.
Product Specifications
| Specification |
Details |
| Product Type |
Auxiliary Coolant Pump |
| Vehicle |
Tesla Model 3/Y |
| OEM Number |
1088245-00-K |
| Material |
Automotive-grade plastic and metal |
| Connector Type |
OEM electrical connector |
| Installation |
Direct replacement |
| Condition |
Brand new |
Package Includes
1 × Auxiliary Coolant Pump
Installation Location
Front compartment cooling system area.
Professional installation recommended.
Why Replace Your Coolant Pump?
A properly functioning coolant pump helps:
• Maintain optimal battery temperature
• Protect drive unit and electronics
• Ensure proper HVAC performance
• Prevent thermal system faults
Replacing a worn pump improves reliability and vehicle safety.
Installation Guide
1. Preparation (Crucial Safety)
- Safety Gear: Wear safety goggles and chemical-resistant gloves to prevent skin contact with coolant.
- Drain Coolant: Drain approximately 2-3 liters of the specific blue Tesla coolant (G-48 type) until the fluid level is below the pump mounting height.
- Power Down: On the touchscreen, go to Safety > Power Off. Also, disconnect the 12V (or 16V) low-voltage battery/emergency circuit according to official procedures.
2. Removing the Old Pump
- Access: Remove the front trunk (Frunk) and the plastic trim covers underneath to expose the Superbottle reservoir assembly.
- Disconnect: Press the tab on the 4-pin electrical connector and carefully pull it out.
- Unbolt: Use a 10mm socket to remove the 3 bolts securing the pump.
- Pull Out: Slowly pull the pump straight out of the Superbottle. Note: Have a rag ready for any residual coolant spill.
- Check O-Rings: Ensure both black O-rings came out with the old pump and are not stuck inside the reservoir.
3. Installing the New Pump (Precision Step)
- Lubricate O-Rings: You MUST apply a small amount of clean coolant or specialized O-ring lubricant to the two new O-rings. This prevents them from tearing or flipping during insertion.
- Seat the Pump: Align the new pump with the mounting holes on the Superbottle and push it in straight and firmly.
-
Torque Bolts: Hand-tighten the 3 bolts, then use a torque wrench to tighten to:
- Standard Torque: 5 Nm (Do not over-tighten, as the housing is plastic).
- Reconnect: Plug in the 4-pin connector until you hear a "click."
4. Refilling & Bleeding (System Calibration)
Warning: Do not drive the car immediately after installation, or the motor may burn out due to air pockets.
- Refill: Fill the reservoir with original blue Tesla coolant to the MAX line.
-
Enter Service Mode:
- Go to Software, long-press the "Model 3/Y" text, and type the password to enter Service Mode.
-
Run Bleeding Procedure:
- Navigate to: Thermal > Coolant Fill & Bleed.
- The system will automatically run the pumps to purge air. Monitor the reservoir and top up the coolant as the level drops.
- Final Check: Once the procedure finishes, verify there are no leaks and reinstall the Frunk.
FAQ
Is this plug and play?
Yes. Direct replacement with OEM-style connector.
Do I need software programming?
No programming required.
Is this an original Tesla part?
This is a high-quality aftermarket replacement built to OEM specifications.
What happens if my coolant pump fails?
Failure can cause overheating, reduced performance, or thermal system warnings.
