Comprehensive Fuse and Bulb Replacement Guide for MG RX5
Fuses protect the electrical appliances of the vehicle by preventing the circuits from being damaged due to a short circuit or overload. A blown fuse indicates that the circuit it protects has failed and stopped working.
Identifying and Handling Faulty Fuses
- If you suspect a fuse is faulty, remove it from the fuse box and inspect it to see if the wire inside the fuse is blown.
- It’s recommended to have spare fuses in the vehicle, available from a local authorized repairer.
Important:
- Never attempt to repair a blown fuse. Always replace it with one of the same rating. Using the wrong fuse can cause electrical system damage or fire.
- If a replaced fuse fails immediately, contact a local authorized repairer as soon as possible.
Fuse Box Locations
The MG RX5 is equipped with three fuse boxes:
- Battery Fuse Box (on the battery)
- Front Compartment Fuse Box (front left of the front compartment)
- Passenger Compartment Fuse Box (under the left dashboard panel cover)
Checking or Replacing a Fuse
Battery Fuse Box Procedure
- Turn off the start switch and all electrical appliances, and disconnect the negative battery cable.
- Press the lock catch and remove the upper cover of the battery fuse box.
- Check whether any fuse is blown. If a fuse is blown, replace it with another fuse of the same ampere value.
Front Compartment Fuse Box Procedure
- Turn off the start switch and all electrical appliances, and disconnect the negative battery cable.
- Press the lock catch to open the upper cover of the front compartment fuse box.
- Hold the fuse head with the fuse extraction tool, pull and remove the fuse, and check whether the fuse is blown.
- If a fuse is blown, replace it with another fuse of the same ampere value.
Fuse Specifications
| Code | Spec. | Function |
|---|---|---|
| FUSE | 350A | Generator, Starter Motor |
| FUSE7 | – | – |
| FL2 | – | – |
| FL3 | 60A | Electric Power Steering System |
| FL4 | 200A | Front Compartment Fuse Box |
| FL5 | 50A | Passenger Compartment Fuse Box |
| F1 | – | – |
| F2 | 10A | Left Daytime Running Lamp |
| F3 | 10A | Right Daytime Running Lamp |
| F4 | – | – |
| F5 | 20A | Windscreen Washer Relay |
| F6 | 20A | Rear Wiper Relay |
| F7 | 30A | Rear Left Window Regulator Switch |
| F8 | 25A | Body Control Module |
| F9 | 25A | Body Control Module |
| F10 | 20A | Front Passenger Seat Adjustment Switch |
| F11 | 30A | Rear Right Window Regulator Switch |
| F12 | 20A | Driver Seat Adjustment Switch |
| F13 | 20A | Sunroof Motor |
| F14 | 15A | Fuel Pump Relay |
| F15 | 10A | A/C Compressor Clutch |
| F16 | – | – |
| F17 | 20A | Sunshade Motor |
| F18 | 10A | Engine Control Module |
| F19 | – | – |
| F20 | 20A | Windscreen Washer Pump |
| F21 | 15A | Horn |
| F22 | – | – |
| F23 | 25A | Transmission Control Module |
| F24 | 30A | Driver Window Regulator Motor |
| F25 | 30A | Rear Window Heating Element |
| F26 | 25A | Front Wiper Speed Control Relay |
| F27 | 25A | Body Control Module |
| F28 | 25A | Body Control Module |
| F29 | 7.5A | Rearview Mirror Heating |
| F30 | – | – |
| F31 | – | – |
| F32 | 5A | Engine Control Module |
| F33 | 25A | Body Control Module |
| F34 | – | – |
| F35 | 30A | Passenger Compartment Fuse Box |
| F36 | 5A | Headlamp Levelling Switch, Headlamp, Interior Rearview Mirror |
| F37 | – | – |
| F38 | – | – |
| F39 | – | – |
| F40 | – | – |
| F41 | – | – |
| F42 | 10A | Transmission Control Module, Engine Control Module, Electronic Shift Control Unit, Reverse Lamp switch, E-Call TBOX, E-Call Switch |
| F43 | 5A | Sensing Diagnostic Module (Airbag) |
| F44 | 10A | Parking Assist Sensor, Body Control Module, Instrument Pack |
| F45 | – | – |
| F46 | 15A | Engine Control Module |
| F47 | 20A | Generator, Air Flow Sensor, Carbon Canister Control Valve, Cooling Fan, Upstream Oxygen Sensor, Downstream Oxygen Sensor |
| F48 | 15A | Ignition Coil |
| F49 | 10A | Variable Valve Timing Valve – Intake, Variable Valve Timing Valve – Exhaust, Electronic Thermostat, Pressure Relief Valve, Brake Signal Sensor, Neutral Switch, Oil Control Valve, Carbon Canister Vent Valve, Electronic Vacuum Pump Relay, Clutch Position Sensor |
| F50 | – | – |
| SB1 | 40A | Stability Control System – Valve |
| SB2 | 40A | Blower, A/C control module |
| SB3 | 30A | Electronic Oil Pump Controller |
| SB4 | 40A | Stability Control System – Pump |
| SB5 | 25A | Body Control Module |
| SB6 | 30A | Power Liftgate Control Module |
| SB7 | – | – |
| SB8 | – | – |
| SB9 | – | – |
| SB10 | 40A | Transmission Control Module Relay |
| SB11 | 30A | Starter Relay |
| SB12 | 30A | Passenger Compartment Fuse Box |
| SB13 | 30A | Electronic Vacuum Pump Relay |
| SB14 | 50A | Cooling fan |
| SB15 | – | – |
Bulb Replacement Guide
Bulb Specifications
| Bulb | Specifications |
|---|---|
| Rear License Plate Lamps | W5W 5W |
| Boot Lamp | C10W 10W |
Note: Other lights not listed are all LED, which cannot be replaced separately.
Replacing Bulbs
Before replacing any bulb, turn off the start switch and lighting switch to avoid any possibility of a short circuit.
Note: Only replace bulbs with the same type and specification.
If the bulb glass is scratched or contaminated by oil or sweat stains, the bulb may not concentrate the light during use. When replacing the bulb, wear gloves or wrap it in a soft cloth, and be careful not to touch the bulb glass with your hands. If necessary, wipe off the traces on the bulb with alcohol.
For other bulbs not listed and to be replaced, or if there is any doubt about bulb replacement, contact a local authorized repairer for help.
Rear License Plate Lamps Replacement
- Open the tailgate.
- Disconnect the battery negative terminal.
- Pry the upper trim panel of the tailgate using a small flat-bladed screwdriver and remove it.
- Remove two screws fixing the interior middle trim panel to the tailgate, and remove the tailgate interior middle trim panel.
- Remove four screws fixing the lower trim panel to the tailgate, and remove the lower trim panel of the tailgate.
- Disconnect the rear license plate trim harness connector.
- Remove four bolts fixing the rear license plate trim to the tailgate and loosen clips.
- Gently pry the rear license plate trim and clips to remove the rear license plate trim.
- Rotate the license plate lamp bulb holder anti-clockwise to remove the bulb.
- Fit the new bulb to the bulb holder.
The installation of the bulb is a reversal of the removal process.
Boot Lamp Replacement
- Insert a small flat-bladed screwdriver into the indent on one of the narrow sides of the lens and carefully press the unit from its location.
- Turn the bulb while pushing to remove it.
The installation of the bulb is a reversal of the removal process.