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Fuse box diagrams (layout, function, assignment) in the cabin and engine compartment of Acura RL (KB1/KB2; 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012).
Checking and Replacing Fuses
If something electrical in your vehicle stops working, the first thing you should check for is a blown fuse. Determine from the chart, or the diagram on the fuse box lid, which fuse or fuses control that device. Check those fuses first, but check all the fuses before deciding that a blown fuse is the cause. Replace any blown fuses, and check if the device works.
- Turn the ignition switch to LOCK (0). Make sure the headlights and all other accessories are off.
- Remove the cover from the fuse box.
- Check each of the large fuses in the under-hood fuse box by looking through the top at the wire inside. Removing these fuses requires a Phillips-head screwdriver.
- Check the smaller fuses in the under-hood fuse box and all the fuses in the interior fuse boxes by pulling out each fuse with the fuse puller. The fuse puller is inside the primary under-hood fuse box.
- Look for a blown wire inside the fuse. If it is blown, replace it with one of the spare fuses of the same rating or lower.
If you cannot drive the vehicle without fixing the problem, and you do not have a spare fuse, take a fuse of the same rating or a lower rating from one of the other circuits with the fuse puller provided in the underhood fuse box. Make sure you can do without that circuit temporarily (such as the accessory power socket or radio). If you replace the blown fuse with a spare fuse that has a lower rating, it might blow out again. This does not indicate anything wrong. Replace the fuse with one of the correct rating as soon as you can. - If the replacement fuse of the same rating blows in a short time, there is probably a serious electrical problem with your vehicle. Leave the blown fuse in that circuit, and have your vehicle checked by a qualified mechanic.
Note
Replacing a fuse with one that has a higher rating greatly increases the chances of damaging the electrical system. If you do not have a replacement fuse with the proper rating for the circuit, install one with a lower rating.
Passenger Compartment
- Fuse Box №1
- Keyless Access Control Unit
- Adaptive Front Lighting (AFS) Control Unit
Headlight Leveling Control Unit (without AFS) - Electronically Controlled Power Steering (ECPS) Control Unit
- Daytime Running Lighting (DRL) Control Unit
- 2006-2010: Adaptive Cruise Control Unit
2011-2012: Powertrain Control Module
- Relay Box №1
- Combination Switch Control Unit
- Gauge Control Module
- Turn Signal / Hazard Relay №2
- Navigation Display Unit
- Fuse Box №2
- Control Motor Relay (HVAC)
- Climate Control Unit
- Audio Unit
- Relay Box №2
- Ignition Switch Control Unit
- Immobilizer Control Unit (Receiver)
- Power Tilt/Telescopic Steering Control Unit
- Radio Frequency (RF) Unit №1
- E-Pretensioner Unit
- 2005-2006: Imoes Unit
- HandsFreeLink Control Unit
- 2009-2012: Relay Box №3
- 2005-2010: Powertrain Control Module
2011-2012: Adaptive Cruise Control (ACC) Unit - Supplemental Restraint System (SRS) Unit
- 2007-2012: Imoes Unit
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Passenger Compartment Fuse Box №1 Diagram
The interior fuse boxes are located under the dashboard on the driver’s and passenger’s side. To remove the fuse box lid, put your finger in the notch on the lid, pull it toward you, and take it out of its hinges.
| № | A | Protected Component |
|---|---|---|
| 1 | 15 | Electronic Throttle Control System (ETCS) Control Relay |
| 2 | 15 | Ignition Coil Relay, Ignition Coils |
| 3 | 10 | Daytime Running Lights Control Unit (USA), Daytime Running Lights Control Relay (Canada) |
| 4 | 15 | Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1), Front Secondary Heated Oxygen Sensor (HO2S) (Bank 2, Sensor 2), Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1), Rear Secondary Heated Oxygen Sensor (HO2S) (Bank 1, Sensor 2) |
| 5 | 7.5 | AcuraLink Control Unit (XM Receiver), ANC/Active Sound Control Unit (2011-2012). Audio Unit, Navigation Unit, HandsFreeLink Control Unit, Onstar Control Unit (2005-2006), Display Control Unit (2005-2010) |
| 6 | 7.5 | Keyless Access Control Unit, Footwell Lights, Courtesy Lights, Door Inner Handle Lights, Door Outer Handle Lights, Trunk Lights, Individual Map Lights, Vanity Mirror Lights, Left and Right Rear Power Window Switches, Driver's MPCS Unit (2005-2010), Front Passenger's MPCS Unit (2005-2010), Driver's Outer Handle Touch Sensor (2005-2010), Front Passenger's Outer Handle Touch Sensor (2005-2010) |
| 7 | 10 | Combination Switch Control Unit, Driver's Outer Handle Touch Sensor (2011-2012), Gauge Control Module, Immobilizer Control Unitreceiver, Imoes Unit, Driver's MPCS Unit, Fog Lights Relay (2011-2012), Front Passenger's MPCS Unit, Front Passenger's Outer Handle Touch Sensor (2011-2012), Fuel Fill Door Open Solenoid (2011-2012), Power Seat Control Unit, Power Tilt/Telescopic Steering Control Unit, Multiplex Integrated Control Unit (MICU), Navigation Display Unit, Navigation Unit, Keyless Access Control Unit, Ignition Key Light, Adaptive Cruise Control Unit (2006-2012) |
| 8 | 20 | Door Lock, Multiplex Integrated Control Unit (MICU) |
| 9 | 20 | Accessory Power Sockets |
| 10 | 7.5 | Occupant Detection System (ODS) Unit, Front Passenger's Airbag Cutoff Indicator, Supplemental Restraint System (SRS) Unit |
| 11 | 7.5 | 2005-2008: Adaptive Front Lighting Control Unit, Power Rear Sunshade Control Unit, Windshield Washer Motor, Under-Hood Fuse/Relay Box |
| 15 | 2009-2012: Adaptive Front Lighting Control Unit, Power Rear Sunshade Control Unit, Windshield Washer Motor, Under-Hood Fuse/Relay Box | |
| 12 | 7.5 | 2005-2008: Tire Pressure Monitoring System (TPMS) Control Unit |
| 15 | 2009-2012: Rear Seat Heater | |
| 13 | 20 | Front Passenger's Power Seat (Recline and Rear Up/Down Motors) |
| 14 | 20 | Driver's Lumbar Support Motor (2009-2012), Power Seat Control Unit (VMP1) |
| 15 | 10 | 2005-2008: Driver's and Front Passenger Lumbar Support Motor |
| 7.5 | 2009-2012: Tire Pressure Monitoring System (TPMS) Control Unit | |
| 16 | 20 | Power Seat Control Unit (VMP2) |
| 17 | 20 | Front Passenger's Lumbar Support Motor (2009-2012), Front Passenger's Power Seat (Slide and Front Up/Down Motors) |
| 18 | 15 | Alternator, Electrical Load Detector (ELD), Engine Mount Control Solenoid, Evaporative Emission Control (EVAP) Canister Purge Valve, Powertrain Control Module (PCM), Brake Pedal Position Switch, Steering Angle Sensor (2009-2012), VSA Modulator-Control Unit, Yaw Rate-lateral Acceleration Sensor (2011-2012) |
| 19 | 20 | Imoes Unit (2011-2012), Keyless Access Control Unit, Powertrain Control Module (PCM), Fuel Pump Control Module (PGM-FI Main Relay 2) |
| 20 | 15 | Mass Airflow (MAF) Sensor/Intake Air Temperature (IAT) Sensor, Powertrain Control Module (PCM) |
| 21 | 10 | Seat Ventilation Control Units, Automatic Dimming Inside Mirror, Combination Switch Control Unit, Driver's MPCS Unit, Electronically Controlled Power Steering (ECPS) Control Unit (2011-2012), Gauge Control Module, Imoes Unit, Power Seat Control Unit, Power Tilt/Telescopic Steering Control Unit, Shift Lock Solenoid, Seat Belt Tension Reducer Solenoid, Tire Pressure Monitoring System (TPMS) Control Unit, AcuraLink Control Unit (XM Receiver), Daytime Running Lights Control Unit (USA), Navigation Unit, Power Steering Control Unit, Seat Belt Tension Reducers, XM Receiver Unit, Under-Hood Fuse/Relay Box (Relay Control Module), Onstar Control Unit (2005-2006) |
| 22 | 10 | Supplemental Restraint System (SRS) Unit |
| 23 | 7.5 | Radiator Fan Control (RFC) Unit Relay, Air Fuel Ratio (A/F) Sensor Relay |
| 24 | 20 | Left Rear Power Window Switch |
| 25 | 20 | Power Tilt/Telescopic Steering Control Unit (Telescopic) |
| 26 | 20 | Power Tilt/Telescopic Steering Control Unit (Tilt) |
| 27 | 30 | Driver’s Power Window |
| 28 | 20 | Moonroof Motor/Control Unit |
| 29 | 7.5 | Adaptive Front Lighting Control Unit, Headlight Leveling Control Unit (without AFS (2007-2012)) Power Steering Control Unit, Super Handling-All Wheel Drive (SH-AWD) Control Unit. Adaptive Cruise Control (ACC) Unit (2006-2012), Millimeter Wave Radar Unit. Adaptive Cruise Control (ACC) Relay (2006-2012) |
| 30 | 7.5 | A/C Compressor Clutch Relay, Blower Motor Relay, Climate Control Unit, In-car Temperature Sensor, Rear Seat Heater Relay (2009-2012), Rear Window Defogger Relay, Seat Heater Relay |
| 31 | 7.5 | 2009-2012: E-Pretensioner Unit |
| 32 | 10 | AcuraLink Control Unit (XM Receiver), ANC/Active Sound Control Rear Microphone (2011-2012), ANC/Active Sound Control Front Microphone (2011-2012), HandsFreeLink Control Unit, Navigation Display Unit, Key Interlock Solenoid, Microphone, Audio Unit (2005-2010), Navigation Unit, Shift Lock Solenoid, Keyless Access Control Unit, Interface Dial, Ignition Switch Control Unit, Active Noise Cancellation Unit (2005-2010), Onstar Control Unit (2005-2006), Accessory Power Socket Relay, Multiplex Integrated Control Unit (MICU) |
| 33 | - | - |
| R1 | Turn Signal / Hazard | |
| R2 | Ignition Coil | |
| R3 | PGM-FI Main №1 | |
| R4 | Accessory Power Socket | |
| R5 | PGM-FI Main №2 (Fuel Pump) | |
| R6 | - | |
| R7 | Air Fuel Ratio (A/F) Sensor | |
| R8 | Starter Cut №2 | |
Passenger Compartment Fuse Box №2 Diagram
To remove the fuse box lid, put your finger in the notch on the lid, pull it toward you, and take it out of its hinges.
| № | A | Protected Component |
|---|---|---|
| 1 | 30 | Super Handling-All Wheel Drive (SH-AWD) Control Unit (Super Handling-All Wheel Drive (SH-AWD) Relay) |
| 2 | 30 | Audio Amplifier |
| 3 | 30 | Passenger’s Power Window |
| 4 | 30 | E-Pretensioner Unit |
| 5 | 20 | Right Rear Power Window Switch |
| 6 | 20 | Seat Ventilation Fan Motors, Seat Heater Relay |
| 7 | 7.5 | Audio Unit, AFS OFF/VSA OFF Switch, Cable Reel, Climate Control Unit, Console Box Light, Coin Pocket Light, Dash Lights Brightness Controller, Navigation Display Unit, Hazard Warning Switch/Front Passenger's Airbag Cutoff Indicator, Glove Box Light, A/T Gear Position Panel Light |
| 8 | 30 | 2006-2012: E-Pretensioner Unit |
| 9 | 7.5 | Climate Control Unit, Control Motor Relay |
| R1 | Headlight Washer | |
| R2 | Electronic Throttle Control System (ETCS) | |
| R3 | Seat Heater | |
| R4 | Fuel Fill Door Open | |
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Passenger Compartment Relay Boxes
№1
| № | Relay |
|---|---|
| R1 | Ignition (IG2 Cut) |
| R2 | Ignition (ACC Cut) |
№2
| № | A | Protected Component |
|---|---|---|
| 31 | 7.5 | Ignition Switch (ST), PCM (STS) |
| 32 | 7.5 | Starter Cut Relay №1, Starter cut relay 1 |
| R1 | Starter Cut №1 | |
№3 (2009-2012)
| № | Relay |
|---|---|
| R1 | Rear Seat Heater |
| R2 | - |
Engine Compartment
- Fuse Box №1
- Relay Box
- Fuse Box №2
- Radiator Fan Control (RFC) Unit
- VSA Modulator Control Unit
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Engine Compartment Fuse Box №1 Diagram
The primary under-hood fuse box is in the engine compartment on the driver’s side. To open it, push the tabs.
| № | A | Protected Component |
|---|---|---|
| 1 | 15 | Left Headlight Low Beam (HID Unit) |
| 2 | 30 | Rear Window Defogger Coil, Relay Control Module |
| 3 | 10 | Left Headlight High Beam |
| 4 | 15 | Ambient Light, Front Parking/Front Side Marker Lights, Dashlight, License Plate Lights, Roof Console Lights, Taillights, Rear Door Ashtray Lights, Rear Individual Map Light Switch Lights, Seat Heater Switches Light, Seat Ventilation Control Units, Fuse (Passenger Compartment Fuse Box №2): № 7 |
| 5 | 10 | Right Headlight High Beam |
| 6 | 15 | Right Headlight Low Beam (HID Unit) |
| 7 | 7.5 | Back-Up Light, Relay Control Module |
| 8 | 15 | PGM-FI Main Relay 1, Data Link Connector, PGM-FI Main Relay 2, Crankshaft Position (CKP) Sensor, Camshaft Position (CMP) Sensor, Injectors, Powertrain Control Module (PCM), Throttle Actuator Control Module Relay |
| 9 | 30 | Windshield Wiper Motor Relay |
| 10 | 30 | Headlight Washer Relay |
| 11 | 20 | 2005-2008: Fog Lights |
| 10 | 2009-2012: Fog Lights | |
| 12 | 7.5 | A/C Compressor Clutch |
| 13 | 15 | Brake Lights, High Mount Brake Light. Adaptive Cruise Control (ACC) Unit ('06-'12), Horns, Relay Control Module |
| 14 | 40 | Rear Window Defogger Relay, Noise Condenser |
| 15 | 40 | Fuse (Passenger Compartment Fuse Box №1): № 5, 6, 7, 8, 9; Fuse (Engine Compartment Fuse Box №1): № 7 ('11-'12) |
| 16 | 15 | Turn Signal/Hazard Relay, Multiplex Integrated Control Unit (MICU) |
| 17 | 30 | VSA Modulator Control Unit (Motor) |
| 18 | 40 | VSA Modulator Control Unit |
| 19 | 40 | Fuse (Passenger Compartment Fuse Box №1): № 1, 2, 3, 4 |
| 20 | 40 | Fuse (Passenger Compartment Fuse Box №1): № 12, 13, 14, 15, 16, 17 |
| 21 | 40 | Blower Motor Relay |
| 22 | 120 | Battery, Power Distribution |
| 70 | Passenger Compartment Fuse Box №1 | |
| 23 | 50 | Ignition Switch (BAT), Starter Motor (Starter Cut Relay 1, 2) |
| 50 | Fuse (Passenger Compartment Fuse Box №1): № 24, 25, 26, 27, 28 | |
| R1 | Fog Light Fan Control | |
| R2 | Windshield Wiper | |
| R3 | Rear Window Defogger | |
| R4 | A/C Compressor Clutch | |
| R5 | Blower Motor | |
Engine Compartment Fuse Box №2 Diagram
The secondary under-hood fuse box is on the battery. To open it, push the tabs.
| № | A | Protected Component |
|---|---|---|
| 34 | 50 | Radiator Fan Control (RFC) Unit |
| 35 | - | - |
Engine Compartment Relay Box
| № | Relay |
|---|---|
| R1 | 2006-2012: Adaptive Cruise Control (ACC) |
| R2 | Daytime Running Light (DRL) |
| R3 | Radiator Fan Control (RFC) Unit |
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