Hyundai Tucson: Power Relay Assembly (PRA) - Removal
Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual / Engine Electrical System / 48V Battery System / 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 (A).
- Remove the main relay (B).

Installation
- Install in the reverse order of removal.
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.
Tightening torque : 7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft)

- Remove the terminal capacitor (A) after loosening the mounting bolts.
Tightening torque : 7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft)

- Remove the mounting uuts and remove the battery module (-) busbar (A).
Tightening torque : 7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft)

- Remove the mounting nuts and remove the battery module (+) busbar (A).
Tightening torque : 7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft)

- Remove the BMS wiring harness terminal after loosening the mounting bolts (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 case assembly after loosening the mounting bolts (A).
Tightening torque : 7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft)

- Disconnect the PRA extension connector (A) and the BMS & LDC connectors (B).
- Disconnect the battery temperature sensor extension connector (C).

- Disconnect the cooling blower fan connector (A).

- Remove the battery cooling blower unit (B) from the battery module (A).
Tightening torque : 5.9 - 9.8 N.m (0.6 - 1.0 kgf.m, 4.3 - 7.2 lb-ft)


Installation
- Install in the reverse order of removal.
READ NEXT:
Battery Pack Assembly Inlet Duct/ Battery Pack
Assembly Outlet Duct
Removal and
Installation
Battery Pack Assembly Inlet Duct
Turn the ignition switch OFF and disconnect the battery (-) terminal.
Remove the luggage board (A).
Separate the inlet cooling duct (A) in the direction of the arrow.
Tigh
Battery Module Inlet Duct
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.
Tightening
Battery Module Inlet B Duct
Remove the 48V battery assembly.
(Refer to 48V Battery System - "Repair procedures")
Remove the battery pack assembly inlet duct B (A) after loosening the
mounting bolts.
Install in the reverse order of removal.
Sp
SEE MORE:
Engine Oil
Check the engine oil quality.
Check the oil deterioration, entry of water, discoloring of thinning.
If the quality is visibly poor, replace the oil.
Check the engine oil level.
After warning up the engine and then 10 minutes after the
Cylinder Head Assembly - Removal
Disconnect the battery negative terminal.
Remove the engine cover.
(Refer to Engine and Transaxle Assembly - "Engine Cover")
Remove the air duct and air cleaner assembly.
(Refer to Intake and Exhaust System - "Air Cleane
Information
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- Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual