The service task reference · 2026
Find the procedure. Understand what it does.
Explore diagnostic tests and repair tasks you can run with Tesware on compatible vehicles.
1,357
service tasks
2026 firmware
Model 3, Y, S & X
1,357 tasks Showing 913–936
Browse by name, A–Z
Perform a self test of the rear left seat backrest headpad heating element via the left vehicle controller (VCLEFT).
TEST-SELF_VCLEFT_X_SEAT-HEAT-BACKREST
Tests communication of the Rear Left Door RGB light (RGBDOORRL) with the Left Vehicle Controller (VCLEFT) over the Local Interconnect Network (LIN) bus.
TEST-SELF_VCLEFT_RGBDOORRL
Backs up Drive Inverter Rear Left (DIREL) application data before replacement.
PROC_DIREL_X_STORE-DATA-APP
Tests connection and harness of the rear left and rear right cushion headpads and thermistors controlled by the Left Vehicle Controller (VCLEFT) Electronic Control Unit (ECU).
TEST-SELF_VCLEFT_REAR-X_SEAT-HEAT-CUSHION
Calibrates rear left window endstops for pinch detection. Ensure rear left door is closed. Do not open the door or press the window switch button while the routine runs.
TEST-SELF_VCLEFT_REAR-L_CALIBRATE-WINDOW
Move window to a specified position.
PROC_VCLEFT_REAR-L_COMMAND-WINDOW-POSITION
Enables only the rear motor on a dual motor vehicle with All-Wheel Drive (AWD). Vehicle will operate with only the rear motor. To run this procedure, vehicle must be four wheel drive and satisfy either GUI_isDevelopmentCar, GUI_factoryMode, or GUI_serviceMode.
PROC_ICE_X_REARONLY-MOTOR-MODE
Tests the Local Interconnect Network (LIN) communication of the rear overhead console.
TEST-SELF_VCLEFT_C_ROHC
Tests the connectivity of the rear overhead console siren to the left vehicle controller (VCLEFT) ECU.
TEST-SELF_VCLEFT_FRONT_SIREN
Calibrates the rear passenger door handle by actuating the fork to its maximum and minimum positions. If needed, the routine configures the door handle controller to learn its location.
PROC_DHRP_REAR-PAS_DOOR-HANDLE-CALIBRATION
Tests if the second row right seat backrest heater is drawing sufficient current by performing a load test. This routine outputs current draw statistics, including threshold, minimum and maximum current, average current, and standard deviation.
TEST-SELF_VCRIGHT_REAR-R_SEAT-HEAT-BACKREST-HYDROXIDE
Tests if the second row right seat backrest heater is drawing sufficient current by performing a load test. This routine outputs current draw statistics, including threshold, minimum and maximum current, average current, and standard deviation.
TEST-SELF_VCRIGHT_X_SEAT-HEAT-BACKREST
Tests the connectivity of the right body side tail light. Applies to Gen 1 controller.
TEST-SELF_VCRIGHT_REAR_BODY-SIDE-TAIL-LIGHT
Tests communication of the Rear Right Door RGB light (RGBDOORRR) with Right Vehicle Controller (VCRIGHT) over the Local Interconnect Network (LIN) bus.
TEST-SELF_VCRIGHT_RGBDOORRR
Backs up Drive Inverter Rear Right (DIRER) application data before replacement.
PROC_DIRER_X_STORE-DATA-APP
Calibrates rear right window endstops for pinch detection. Ensure rear right door is closed and do not open the door or press the window switch button while the routine runs.
TEST-SELF_VCRIGHT_REAR-R_CALIBRATE-WINDOW
Move window to a specified position.
PROC_VCRIGHT_REAR-R_COMMAND-WINDOW-POSITION
Tests the connectivity of the rear left, center, and right seat occupancy sensors to the left vehicle controller (VCLEFT) ECU.
TEST-SELF_VCLEFT_REAR-X_SEAT-OCCUPANCY-SENSOR-HYDROXIDE
Tests if the second row seat cushion heaters (left, center, and right) and thermistors are operating as expected by performing load tests, verifying current draw, and checking thermistor health.
TEST-SELF_VCLEFT_REAR-X_SEAT-HEAT-CUSHION-HYDROXIDE
Tests if the second row seat cushion heaters (left, center, and right) and thermistors are operating as expected by performing load tests, verifying current draw, and checking thermistor health.
TEST-SELF_VCRIGHT_X_SEAT-HEAT-CUSHION
Tests electrical connection of the second row seat fold flat switchpack located behind the left rear seats
TEST-SELF_VCLEFT_REAR_SEAT-FOLD-FLAT-SWITCH
Tests the connectivity of the rear seat occupancy sensors to the left vehicle controller (VCLEFT) ECU.
TEST-SELF_VCLEFT_REAR_SEAT-OCCUPANCY-SENSOR
Programs the address of the rear Ultrasonic Sensors (USS).
PROC_USM_REAR_PROGRAM-USS-ADDRESSES
This check verifies that the rear defrost grid is heating when it is commanded on.
PROC_CID_REAR_WINDOW-DEFROST
Descriptions and input definitions come from Tesla’s 2026 vehicle firmware. This catalog includes tasks covered by Tesware’s current service access. Each task page lists the vehicle and firmware versions in which it was found. The connected vehicle confirms whether a task can run.
Cybertruck is not included in this 2026 reference.