Tesla Model S: Coolant Heater - Electric - Battery - 1st Generation (Remove and Replace)
Warning: Only technicians who have been trained in High
Voltage Awareness are permitted to perform this procedure. Proper
personal protective equipment (PPE) and insulating HV gloves with a
minimum rating of class 00 (500V) must be worn any time a high
voltage cable is handled. Refer to Tech Note TN-15-92-003, "High
Voltage Awareness Care Points" for additional safety information.
This procedure only applies to vehicles with the 1st generation High
Voltage configuration. For vehicles with the 2nd generation High Voltage
configuration, refer to Coolant Heater - Electric - Battery - 2nd
Generation (Remove and Replace).
Removal
- Perform the vehicle electrical isolation procedure (refer
to procedure).
- Remove the underhood storage unit for access (refer to
procedure).
- Remove the RH front wheel arch liner (refer to procedure).
- Disconnect the DCDC converter to battery coolant electric heater
HV harness connector.
- Feed the harness into the underhood storage unit well.
- Disconnect the DC to battery coolant electric heater LV harness
connector.
- Position a container to collect any coolant.
- Clamp the feed and return coolant hoses.
- Release the clips (x2) that secure the feed and return coolant
hoses to the battery coolant heater. Release the hoses from the
heater.
- Release the clips (x3) that secure the wiring harness to the
battery coolant heater.
- Remove the bolts (x3) that secure the battery coolant heater
bracket to the body (torque 8 Nm).
- Remove the battery coolant heater.
- Remove the bolts (x4) that secure the battery coolant heater to
the bracket (torque 9 Nm).
Installation
Installation procedure is the reverse of removal, except for the
following:
Refill and bleed the cooling system (refer to procedure).
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Warning: Only technicians who have been trained in High
Voltage Awareness are permitted to perform this procedure. Proper
personal protective equipment (PPE) and insulating HV gloves with a
Warning: Only technicians who have been trained in High
Voltage Awareness are permitted to perform this procedure. Proper
personal protective equipment (PPE) and insulating HV gloves with a
Warning: If the 12V power supply is
disconnected, do not attempt to open any doors with door glass
in closed position. Failure to follow this instruction could
result in door glass shat
SEE MORE:
Touch Controls > Lights to control the lights.
NOTE: You can also access an abbreviated lights menu
while driving by touching the Auto High Beam button on
the steering yoke. A lights menu displays on the
touchscreen, providing quick access to headlight
controls.
In addition to the lights that
Special tools required for this procedure:
Supplier
Part Number
Description
Tesla
1000991
Axle Extractor
Note: Use 1000991 for a large drive unit only.