Hyundai 58520-K4000 Unit Assembly- Integrated Electric

Removal 1. Park on a level surface, chock wheels, place transmission in park, and wear gloves and eye protection. 2. Disconnect the 12V battery negative terminal to disable vehicle electronics. 3. Because this is a high-voltage electric vehicle, follow the manufacturer's high-voltage isolation procedure or have a qualified technician perform it and wait the required time for capacitors to discharge. 4. Protect painted surfaces and place a suitable fluid catch container and absorbent rags under the master cylinder area. 5. Clean the reservoir exterior to prevent dirt entering the system when opened. 6. Remove the reservoir cap and diaphragm, then remove as much brake fluid from the reservoir as practical using a hand pump or syringe into an approved container. 7. Identify and note hose/line routing and connection types (clamps, quick-connects, etc.), since designs vary. 8. Loosen and disconnect hoses or fittings from the reservoir, catching any remaining fluid and sealing open lines to minimize contamination. 9. Remove any retaining clips or fasteners securing the reservoir-if the reservoir is integral with the master cylinder, stop and consult the vehicle service information before proceeding. 10. Lift the reservoir free of its mounting, avoiding spills, and inspect mating surfaces, seals, and hoses for damage. Installation 1. Confirm the replacement reservoir is correct and clean inside; install any new seals or O-rings supplied with the part. 2. Position the reservoir onto the master cylinder or mount without forcing and secure with the original clips or fasteners per the vehicle's design. 3. Reconnect hoses and fittings, using new clamps or quick-connects if required, and ensure proper seating to prevent leaks. 4. Reinstall the reservoir cap and diaphragm and ensure vent paths are clear. 5. Refill the reservoir with the manufacturer-specified brake fluid only; do not mix fluid types. 6. Bleed the brake hydraulic system using an appropriate method for the vehicle; if ABS/ESP is present, follow the correct bleeding procedure which may require a scan tool or special steps. 7. Inspect all connections for leaks, correct any issues, and top off fluid to the proper level. 8. Reconnect the 12V battery negative terminal. 9. Re-enable the high-voltage system following the manufacturer's procedure or have a qualified technician complete this step. 10. Check brake pedal feel and warning lights, then perform a low-speed functional test in a safe area; recheck for leaks and fluid level. Repair tips 1. Use only fresh, unopened brake fluid of the type specified by the manufacturer and keep the reservoir and tools clean to avoid contamination. 2. Immediately clean any spilled brake fluid from painted surfaces to prevent damage.