Battery Terminal

This procedure covers the inspection, cleaning, and replacement of battery terminals on the 2024 Rivian EDV 500's high-voltage battery system.

Warnings

Tools required

Parts

• High-voltage battery terminal (if damaged) × 1 — Use OEM specification
• Battery terminal fasteners (if corroded) × 1 — Use OEM specification
• High-voltage interlock connector seal × 1 — Use OEM specification

Preparation

1. Verify you have completed high-voltage vehicle safety training and are qualified to work on EV systems
2. Park vehicle on level surface and engage parking brake
3. Ensure vehicle is in Park mode and powered off completely
4. Open driver's door and leave open to prevent system from entering sleep mode unexpectedly
5. Gather all high-voltage safety equipment including insulated gloves, face shield, and voltage test equipment
6. Review vehicle service manual high-voltage safety procedures specific to Rivian EDV platform
7. Have emergency contact information and first aid equipment readily available

Procedure

1. 1

   Access diagnostic system and enter service mode
   Connect Rivian diagnostic tool to OBD-II port. Power on vehicle and access service menu through diagnostic interface. Enable High-Voltage Service Mode which will disable high-voltage contactors and prevent system activation. Document any stored fault codes related to battery system.
2. 2

   Disconnect 12V auxiliary battery
   Open front hood and locate 12V auxiliary battery. Disconnect negative terminal first, then positive terminal. Secure cables away from battery posts to prevent accidental reconnection. Wait 2 minutes for vehicle systems to fully power down.
3. 3

   Remove access panels to high-voltage battery compartment
   Depending on which battery terminal requires service (main pack terminals are typically under rear cargo area), remove appropriate interior panels or underbody shields. For EDV 500, main battery terminals are located in the battery pack assembly beneath the cargo floor. Remove cargo floor panels and battery access cover panels using panel removal tools.
4. 4

   Disable high-voltage interlock system
   Locate the high-voltage service disconnect (typically orange-colored connector with safety interlock). Carefully remove the service disconnect connector by pulling the safety lock tab and disconnecting. Store the service disconnect in your pocket or secure location where it cannot be accidentally reinstalled. Verify interlock indicator light is illuminated if present.
5. 5

   Wait for capacitor discharge period
   Wait minimum 10 minutes after removing service disconnect to allow high-voltage capacitors within the battery management system and inverters to fully discharge. Do not touch any orange high-voltage cables during this waiting period. Set a timer to ensure full waiting period is observed.
6. 6

   Don high-voltage safety equipment
   Put on high-voltage insulated gloves rated for minimum 1000V DC. Inspect gloves for any tears, holes, or damage before use. Wear face shield and ensure you are standing on non-conductive surface. Have second qualified person present to observe safety procedures.
7. 7

   Verify zero voltage at battery terminals
   Using CAT III rated multimeter set to DC voltage, carefully measure voltage between positive and negative battery terminals, and between each terminal and vehicle chassis ground. All readings must show 0V DC (less than 5V residual). If any voltage above 5V is detected, do not proceed and investigate why system has not discharged properly. Repeat measurement at multiple points to confirm.
8. 8

   Document terminal condition and remove cable connections
   Photograph battery terminal condition before disassembly for reference. Identify which terminal requires service (positive or negative). Using appropriate socket, loosen terminal fasteners. Note that Rivian uses specific bolt configurations - do not force fasteners. Remove negative cable connection first, then positive cable connection. Support cables to prevent strain on connectors.
9. 9

   Inspect and clean or replace battery terminals
   Inspect terminals for corrosion, damage, discoloration, or deformation. Minor surface corrosion can be cleaned with non-metallic wire brush and battery terminal cleaner. If terminals show pitting, heat damage, or mechanical damage, they must be replaced with OEM parts. Clean mating surfaces on cables as well. Ensure no debris or contamination remains in connection area.
10. 10

    Apply dielectric grease and reinstall connections
    Apply thin layer of dielectric grease to clean terminal surfaces to prevent future corrosion. Reinstall positive cable connection first, then negative cable connection. Ensure cables are properly seated and aligned before tightening fasteners. Hand-thread fasteners initially to prevent cross-threading.
11. 11

    Torque terminal fasteners to specification
    Since no specific torque values are provided in database, consult Rivian service manual for exact torque specifications for high-voltage battery terminal fasteners. Typical high-current battery connections require precise torque to ensure proper contact resistance. Under-torquing causes resistance and overheating; over-torquing can damage terminals. Use calibrated torque wrench and tighten in proper sequence if multiple fasteners are present.
12. 12

    Verify connection integrity
    Visually inspect all connections to ensure cables are fully seated and fasteners are tight. Gently attempt to move cables to verify they are secure. Check that no wire strands are visible outside connection points and that orange high-voltage cable insulation is not damaged.
13. 13

    Reinstall high-voltage interlock and access panels
    Reinstall high-voltage service disconnect connector, ensuring it clicks into place and safety lock tab is engaged. Replace all battery compartment access panels and cargo floor panels. Ensure all fasteners are reinstalled and panels are properly seated.
14. 14

    Reconnect 12V auxiliary battery
    Reconnect 12V auxiliary battery by connecting positive terminal first, then negative terminal. Ensure connections are tight and secure.
15. 15

    Exit service mode and perform system verification
    Using diagnostic tool, exit High-Voltage Service Mode and allow vehicle systems to re-initialize. Power on vehicle and observe instrument cluster for any high-voltage system warnings or fault indicators. Use diagnostic tool to check for new fault codes. Verify battery management system shows proper voltage readings and no isolation faults are present.

Reassembly

1. Ensure all high-voltage access panels are reinstalled with proper fasteners
2. Verify service disconnect is properly engaged and locked
3. Confirm cargo area is returned to original configuration
4. Remove all tools from vehicle and work area

Verification

• Power on vehicle and verify no warning lights related to high-voltage system are displayed on instrument cluster
• Use diagnostic tool to verify battery system shows no fault codes and proper voltage readings
• Verify battery state of charge is being reported correctly
• Perform test drive if appropriate to confirm vehicle operates normally
• Monitor battery system for next few drive cycles for any intermittent connection issues
• Check terminal area after initial operation for signs of heating or discoloration indicating poor connection

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