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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

  1. Remove the PRA assembly.

(Refer to 48V Battery System - "Power Relay Assembly (PRA)")

  1. Remove the PRA cover.
  2. Remove the mounting bolts and remove the power relay busbar (A).

  1. Disconnect the main relay connector (A).
  2. Remove the main relay (B).

Installation

Installation

  1. Install in the reverse order of removal.

Removal

  1. Turn ignition switch OFF and disconnect the battery (-) terminal.
  2.  Remove the 48V battery assembly.

(Refer to 48V Battery System - "Repair procedures")

  1. 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)

  1. 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)

  1. 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)

  1. 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)

  1. 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)

  1. 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)

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

  1. Disconnect the cooling blower fan connector (A).

  1. 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

Installation

  1. Install in the reverse order of removal.

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