Hyundai Tucson: 48V Battery System - Removal
Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual / Engine Electrical System / 48V Battery System / 48V Battery System - Removal
- Turn the ignition switch OFF and disconnect the battery (-) terminal.
- Remove the luggage board (A).

- Disconnect the BMS ECU extension wiring harness connector (A).

- Disconnect the inverter power cables (A).
Tightening torque : 26.5 - 32.4 N.m (2.7 - 3.3 kgf.m, 19.5 - 23.9 lb-ft)

- Disconnect the 12V (+) cable (A).
Tightening torque : 26.5 - 32.4 N.m (2.7 - 3.3 kgf.m, 19.5 - 23.9 lb-ft)

- Separate the inlet cooling duct (A) in the direction of the arrow.
Tightening torque : 7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft)

- Remove the outlet cooling duct (A).
Tightening torque : 7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft)

- Remove the 48V battery assembly (A).
Tightening torque : 19.6 - 29.4 N.m (2.0 - 3.0 kgf.m, 14.5 - 21.7 lb-ft)

Installation
- Install in the reverse order of removal.
Specifications

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48V Battery System - Repair procedures (Removal)
Turn ignition switch OFF and disconnect the battery (-) terminal.
Remove the 48V battery assembly.
(Refer to 48V Battery System - "Repair procedures")
Remove the battery cover (A) after loosening the mounting bolts.
Tightenin
BMS ECU Terminal and Input/Output Signal
Terminal Function
Connector B10-A
Connector B01-B
Removal
Turn ignition switch OFF and disconnect the battery (-) terminal.
Remove the 48V battery assembly.
(Refer to 48V Battery System - "Repair procedures")
Power Relay Assembly (PRA) - Removal
Removal
Remove the PRA assembly.
(Refer to 48V Battery System - "Power Relay Assembly (PRA)")
Remove the PRA cover.
Remove the mounting bolts and remove the power relay busbar (A).
Disconnect the main relay connector
SEE MORE:
Multifunction Switch Inspection
Check for continuity between the terminals in each switch position as
shown below.
Inspection (With Diagnostic Tool)
In the body electrical system, failure can be quickly diagnosed by using
the vehicle diagnostic system (d
Forward Collision-Avoidance Assist Operation
Basic function
Warning and control
The basic function for Forward Collision-
Avoidance Assist is to help warn and
control the vehicle depending on the
collision risk level : 'Collision Warning',
'Emergency Braking' and 'Stopping
vehicle and en
Information
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- Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual