FIELD SERVICE CAMPAIGN
SUBJECT

Pressure / Temperature Sensor Replacement

Campaign No.: 001
Issue Date: 9/19/2024

APPLICABLE MODELS/VINS
Model: Tre FCEV
VINs: S2393062 thru S2393064, S2393066, S2393069 thru S2393071, S2393073 thru S2393075, S2393077, S2393079,
S2393083, S2393084, S2393089, S2393094, S2393096, S2393104, S2393107, S2393108, and S2393111.

OVERVIEW
Pressure / Temperature sensors malfunctioning, causing the thermal system to operate incorrectly.

PARTS REQUIRED
Qty.

Part No.

Description

As required

PN00396034

Pressure and Temperature Sensor

COMMENTS
N/A

MATERIALS REQUIRED
Qty.

Part No.

Description

N/A
COMMENTS
N/A

LABOR INFORMATION
Labor Operation: Pressure / Temperature Sensor Replacement
Labor Code: FSC001
Labor Time: 1.2 hours

COMMENTS
N/A
DISPOSITION INFORMATION
Return all affected sensors to:
Nikola Corporation
680 East Houser Road
Coolidge, AZ 85128

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FIELD SERVICE CAMPAIGN
APPENDIX

Pressure / Temperature Sensor Replacement Locations
General
The table below shows the pressure and temperature sensors that need to be replaced on the particular VIN.
Sensor Part Number PN00396034
VIN

S2393062
S2393063
S2393064
S2393066
S2393069
S2393070
S2393071
S2393073
S2393074
S2393075
S2393077
S2393079
S2393083
S2393084
S2393089
S2393094
S2393096
S2393104
S2393107
S2393108
S2393111

HVAC Radiator
Fan Sensor (A)

Replace
Replace

Driver Side
Condenser
Sensor (B)
Replace
Replace
Replace
Replace
Replace
Replace
Replace
Replace
Replace
Replace
Replace

Driver
Side Chiller
Sensor (C)

Passenger
Side Chiller
Sensor (D)

Replace
Replace

Replace
Replace
Replace

Replace
Replace
Replace

Replace
Replace

Replace

Replace

Replace

Replace
Replace
Replace
Replace
Replace

Replace
Replace
Replace

Total

1
1
1
1
1
1
1
1
1
1
1
1
4
3
2
1
1
4
2
4
1

Table 1

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FIELD SERVICE CAMPAIGN
PROCEDURE

Preliminary Steps
1.

Make sure the vehicle is parked and chocked on level ground.

2. Place the vehicle into Accessory or Permanent Accessory.
3. Check the diagnostics page on the infotainment center for any HVAC related faults.
4. On the infotainment screen, find the “Safe Shutdown” section under Settings > SYSTEM.
Note: The Safe Shutdown section appears at the top of the SYSTEM page and will only appear when the
vehicle is in Accessory or Permanent Accessory.
5. Tap ON to select safe shutdown as shown in Figure 1.

Figure 1

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FIELD SERVICE CAMPAIGN
PROCEDURE

Preliminary Steps Cont.
6. Press the START/STOP button to shut down the vehicle.
7. While the vehicle’s system is shutting down, the infotainment screen shows a notification that shutdown is in
progress as shown in Figure 2.

Figure 2
8. When the safe shutdown is complete, the infotainment screen will briefly show a confirmation that the MBD can
be turned off as shown in Figure 3.

Figure 3

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FIELD SERVICE CAMPAIGN
PROCEDURE

Preliminary Steps Cont.
Risk of damage. Before tilting the radiator and cab, the upper center front bumper trim must be removed.
Failure to follow these instructions may cause vehicle damage.
9. Lift the front grille (1) shown in Figure 4.
10. Locate and twist the two bumper trim (2) clips to the unlock position.
11. Remove the bumper trim (2) from the vehicle and place in a safe place.

Figure 4

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FIELD SERVICE CAMPAIGN
PROCEDURE

Preliminary Steps Cont.
Risk of damage. Before tilting the cab, the radiator must be tilted until the cab strap is fully engaged. Failure to
follow these instructions may cause vehicle damage.
12. Locate the radiator release T-handle (3) on the passenger side of the vehicle shown in Figure 5.
13. While holding the radiator (4) pull the T-handle (3).

Figure 5

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PROCEDURE

Preliminary Steps Cont.
14. Tilt the radiator (4) down until the cab strap (5) is fully engaged shown in Figure 6.

Figure 6

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FIELD SERVICE CAMPAIGN
PROCEDURE

Preliminary Steps Cont.
15. Locate and remove the two caps from the HVAC refrigeration line ports shown in Figure 7.
Recovering refrigerant. Always use an approved refrigerant recovery and recharge machine when
working with refrigerant to prevent accidental discharge. Injury to personnel and/or damage to
components may occur.
16. Use a suitable machine to recover the refrigerant from the HVAC system.
17. Record the amount refrigerant collected.
Note: The amount of refrigerant collected should be 610 ± 30 grams.

Figure 7

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PROCEDURE

Preliminary Steps Cont.
18. Tilt the cab until it is in most forward position.
19. Use the manual battery disconnect (MBD) to disconnect the vehicle’s electrical system as shown in Figure 8.

Figure 8

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FIELD SERVICE CAMPAIGN
PROCEDURE

Replacement of HVAC Radiator Fan Sensor (A)
1.

Disconnect the connector on sensor (A) and loosen the sensor then remove it shown in Figure 9.
Risk of damage. Make sure you do not cross thread the sensor when tightening. Damage to components may
occur.

2. Install a new sensor (A) by hand tightening it.
3. Use a torque wrench to torque the sensor (A) to 84.0 ± 4.4 lb-in (9.5 ± 0.5 N·m).

Figure 9

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FIELD SERVICE CAMPAIGN
PROCEDURE

Replacement of Driver Side Condenser Sensor (B)
1.

Remove the center skid plate (1) under bottom of the vehicle by removing eight bolts (2), eight washers (3), five
bolts (4), and five washers (5) shown in Figure 10.

2. Remove the left skid plate (6) under bottom of the vehicle by removing seven bolts (7) and seven washers (8).

Figure 10

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FIELD SERVICE CAMPAIGN
PROCEDURE

Replacement of Driver Side Condenser Sensor (B) Cont.
3. Disconnect the connector on sensor (B) and loosen the sensor then remove it shown in Figure 11.
Risk of damage. Make sure you do not cross thread the sensor when tightening. Damage to components may
occur.
4. Install a new sensor (B) by hand tightening it.
5. Use a torque wrench to torque the sensor (B) to 84.0 ± 4.4 lb-in (9.5 ± 0.5 N·m).

Figure 11

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FIELD SERVICE CAMPAIGN
PROCEDURE

Replacement of Driver Side Condenser Sensor (B) Cont.
6. Install the left skid plate (6) under bottom of the vehicle with seven bolts (7) and seven washers (8) shown in
Figure 12.
7. Use a torque wrench to torque the seven bolts (7) to 22.1 ± 2.95 lb-ft (30 ± 4 N·m).
8. Install the center skid plate (1) under bottom of the vehicle with five bolts (4), and five washers (5).
9. Use a torque wrench to torque the five bolts (4) to 22.1 ± 2.95 lb-ft (30 ± 4 N·m).
10. Install eight bolts (2), eight washers (3), on the center skid plate (1).
11. Use a torque wrench to torque the eight bolts (2) to 22.1 ± 2.95 lb-ft (30 ± 4 N·m).

Figure 12

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FIELD SERVICE CAMPAIGN
PROCEDURE

Replacement of Driver Side Chiller Sensor (C)
or Passenger Side Chiller Sensor (D)
1.

Disconnect the connector on sensors (C) and/or (D) and loosen the sensor, then remove it shown in Figure 13.
Risk of damage. Make sure you do not cross thread the sensor when tightening. Damage to components may
occur.

2. Install new sensors (C) and/or (D) by hand tightening it.
3. Use a torque wrench to torque the sensor (C) and/or (D) to 84.0 ± 4.4 lb-in (9.5 ± 0.5 N·m).

Figure 13

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FIELD SERVICE CAMPAIGN
PROCEDURE

Final Steps
1.

Turn the MBD switch to the ON position shown in Figure 14.

Figure 14
2. Tilt the cab back to its original position.
Recharging HVAC system. Always use an approved refrigerant recovery and recharge machine when
working with refrigerant to prevent accidental discharge. Injury to personnel and/or damage to
components may occur.
3. Use a suitable recovery and recharge machine to recharge and leak check the HVAC system as follows:
a. Vacuum the HVAC for five minutes.
b. Do a vacuum and leak check to the HVAC system for 10 minutes.
c. If the HVAC system passes the leak check, continue to step 4. If the HVAC system fails, inspect for other
leak points and restart leak check.
4. Use the recovery and recharge machine to charge the HVAC system with 21.5 oz (610 g) of refrigerant.
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PROCEDURE

Final Steps Cont.
5. Push the radiator (1) back until it locks into place shown in Figure 15.

Figure 15

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PROCEDURE

Final Steps Cont.
6. Reinstall the bumper trim (2) onto the vehicle shown in Figure 16.
7. Locate and twist the two bumper trim (2) clips to the lock position.
8. Lower the front grille (1) on the vehicle.

Figure 16

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