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:
Using seat belts and child safety seats is the most
effective way to protect occupants if a collision occurs.
Therefore, wearing a seat belt is required by law in most
jurisdictions.
Both the driver and passenger seats are equipped with
three-point inertia reel seat belts. Inertia reel belts ar
Removal
Remove the front underhood apron (refer to procedure).
Remove the bolt that secures the horn to the bracket (torque 8
Nm).
Move the connector covers aside and disconnect the horn
connectors (x2).
Rem