Schematic diagrams (location, functions, purpose) of fuse boxes in the passenger compartment 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 car stops working, the first thing you should check is a blown fuse. Use the chart or diagram on the fuse box cover to determine which fuse or fuses control the device. Check those fuses first, but check all fuses before deciding that a blown fuse is the cause. Replace the blown fuses and check to see if the device works.
- Turn the ignition key to the LOCK (0) position. 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 underhood fuse box by looking through the top at the wire inside. These fuses require a Phillips-head screwdriver to remove.
- Check the smaller fuses in the underhood fuse box and all fuses in the interior fuse boxes by pulling each fuse out with a fuse puller. The fuse puller is located inside the primary underhood fuse box.
- Find the blown wire inside the fuse. If it is blown, replace it with a spare fuse of the same rating or lower.
If you cannot drive the car without fixing the problem and you do not have a spare fuse, grab a fuse of the same or lower rating from one of the other circuits using a fuse puller located in the fuse box under the hood. Make sure you can temporarily bypass that circuit (such as an outlet or radio). If you replace a blown fuse with a spare fuse of a lower rating, it may blow again. This does not indicate anything. Replace the fuse with a fuse of the correct rating as soon as possible. - If a replacement fuse of the same rating blows in a short time, your vehicle likely has a serious electrical problem. Leave the blown fuse in that circuit and have a qualified mechanic check your vehicle.
Note
Replacing a fuse with a higher rating greatly increases the chances of damaging the electrical system. If you do not have a spare fuse with the correct rating for the circuit, install a fuse with a lower rating.
Passenger compartment
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Fuse box diagram #1 in the passenger compartment.
The interior fuse boxes are located under the instrument panel on the driver and passenger sides. To remove the fuse box cover, insert your finger into the recess in the cover, pull it toward you, and remove it from the hinges.
| No. | A | Protected component |
|---|---|---|
| 1 | 15 | Electronic Throttle Control System (ETCS) Control Relay |
| 2 | 15 | Ignition Coil Relay, Ignition Coils |
| 3 | 10 | Daytime Running Light Control Unit (USA), Daytime Running Light 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 System, Navigation Unit, HandsFreeLink Control Unit, Onstar Control Unit (2005-2006), Display Control Unit (2005-2010) |
| 6 | 7.5 | Keyless Entry Control Unit, Footwell Light, Courtesy Light, Interior Light, Interior Door Handle Light, Exterior Door Handle Light, Trunk Light, Personal Map Light, Vanity Mirror Light, Left and Right Power Window Switches, Driver MPCS Unit (2005-2010), Front Passenger MPCS Unit (2005-2010), Driver Exterior Handle Touch Sensor (2005-2010), Front Passenger Exterior Handle Touch Sensor (2005-2010) |
| 7 | 10 | Combination Switch Control Unit, Driver Outer Handle Touch Sensor (2011-2012), Sensor Control Module, Immobilizer Control Unit Receiver, Imoes Unit, Driver MPCS Unit, Fog Lamp Relay (2011-2012), Front Passenger MPCS Unit, Front Passenger Outer Handle Touch Sensor (2011-2012), Fuel Filler 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 Entry Control Unit, Ignition Key Light, Adaptive Cruise Control Unit (2006-2012) |
| 8 | 20 | Door Lock, Multiplex Integrated Control Unit (MICU) |
| 9 | 20 | Sockets for accessories |
| 10 | 7.5 | Occupant Detection System (ODS) unit, front passenger airbag off indicator, supplemental restraint system (SRS) unit |
| 11 | 7.5 | 2005-2008: Adaptive Front Lighting Control Module, Power Rear Sun Visor Control Module, Windshield Washer Motor, Under Hood Fuse/Relay Box |
| 15 | 2009-2012: Adaptive Front Lighting Control Unit, Power Rear Sun Visor Control Unit, Windshield Washer Motor, Under Hood Fuse and Relay Box. | |
| 12 | 7.5 | 2005-2008: Tire Pressure Monitoring System (TPMS) Control Unit |
| 15 | 2009-2012: Rear seat heating. | |
| 13 | 20 | Power front passenger seat (tilt and rear lift/lower motors) |
| 14 | 20 | Driver Lumbar Support Motor (2009-2012), Power Seat Control Module (VMP1) |
| 15 | 10 | 2005-2008: Driver 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 Lumbar Support Motor (2009-2012), Front Passenger Power Seat (Slide and Front Raise/Lower Motors) |
| 18 | 15 | Alternator, Electrical Load Sensor (ELD), Engine Mount Control Solenoid, EVAP Canister Purge Valve, Powertrain Control Module (PCM), Brake Pedal Position Switch, Steering Angle Sensor (2009-2012), VSA Modulator Control Unit, Lateral Yaw Rate Sensor (2011-2012) |
| 19 | 20 | Imoes Unit (2011-2012), Keyless Entry Control Unit, Powertrain Control Module (PCM), Fuel Pump Control Module (PGM-FI Main Relay 2) |
| 20 | 15 | Mass Air Flow (MAF) Sensor / Intake Air Temperature (IAT) Sensor, Powertrain Control Module (PCM) |
| 21 years old | 10 | Ventilated Seat Control Units, Auto Dimming Inside Mirror, Combination Switch Control Unit, Driver MPCS Control Unit, Electronic Controlled Power Steering (ECPS) Control Unit (2011-2012), Pressure Gauge Control Unit, Imoes Unit, Power Seat Control Unit, Tilt/Telescopic Power Steering Control Unit, Shift Lock Solenoid, Seat Belt Tensioner Reducing Solenoid, Tire Pressure Monitoring System (TPMS) Control Unit, AcuraLink Control Unit (XM Receiver), Daytime Running Light Control Unit (USA), Navigation Unit, Power Steering Control Unit, Seat Belt Tensioner Reducing Units, XM Receiver Unit, Underhood 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) Relay, Air Fuel Ratio (A/F) Sensor Relay |
| 24 | 20 | Rear left window switch |
| 25 | 20 | Power Tilt/Telescopic Steering Control Unit (Telescopic) |
| 26 | 20 | Power Tilt/Telescopic Steering Control Unit (Tilt) |
| 27 | 30 | Driver’s window lift |
| 28 | 20 | Sunroof Electric Motor/Control Unit |
| 29 | 7.5 | Adaptive Front Lighting Control Unit, Headlamp 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. Adaptive Cruise Control (ACC) Relay (2006-2012) |
| 30 | 7.5 | A/C Compressor Clutch Relay, Blower Motor Relay, Climate Control Unit, Vehicle Temperature Sensor, Rear Seat Heater Relay (2009-2012), Rear Window Defogger Relay, Seat Heater Relay |
| 31 years old | 7.5 | 2009-2012: Electronic pretensioner unit |
| 32 | 10 | AcuraLink Control Unit (XM Receiver), Rear ANC/Active Sound Control Microphone (2011-2012), Front ANC/Active Sound Control Microphone (2011-2012), HandsFreeLink Control Unit, Navigation Display Unit, Key Lock Solenoid, Microphone, Audio System (2005-2010), Navigation Unit, Shift Lock Solenoid, Keyless Entry Control Unit, Interface Dial, Ignition Switch Control Unit, Active Noise Cancellation Unit (2005-2010), Onstar Control Unit (2005-2006), Accessory Outlet Relay, Multiplex Integrated Control Unit (MICU) |
| 33 | — | — |
| Relay | ||
| R1 | Direction indicator / Danger | |
| R2 | Ignition coil | |
| R3 | PGM-FI Home #1 | |
| R4 | Power connector for accessories | |
| R5 | PGM-FI Main #2 (Fuel Pump) | |
| R6 | — | |
| R7 | Air Fuel Ratio (A/F) Sensor | |
| R8 | Starter version #2 | |
Fuse Box #2 in the Passenger Compartment Diagram
To remove the fuse box cover, insert your finger into the recess in the cover, pull it towards you and remove it from the hinges.
| No. | A | Protected component |
|---|---|---|
| 1 | 30 | Super Handling-All Wheel Drive (SH-AWD) Control Unit (Super Handling-All Wheel Drive (SH-AWD) Relay) |
| 2 | 30 | Sound amplifier |
| 3 | 30 | Passenger window lift |
| 4 | 30 | Electronic pretensioner |
| 5 | 20 | Rear right window switch |
| 6 | 20 | Seat Ventilation Fan Motors, Seat Heating Relays |
| 7 | 7.5 | Audio System, AFS OFF/VSA OFF Switch, Cable Drum, Climate Control Unit, Console Box Light, Coin Light, Instrument Panel Dimmer, Navigation Display Unit, Front Passenger Air Bag Off Switch/Indicator, Glove Box Indicator, A/T Gear Position Panel Light |
| 8 | 30 | 2006-2012: Electronic pretensioner unit |
| 9 | 7.5 | Microclimate control unit, control motor relay |
| Relay | ||
| R1 | Headlight washer | |
| R2 | Electronic Throttle Control System (ETCS) | |
| R3 | Seat heating | |
| R4 | The fuel filler door is open | |
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Relay box in the cabin
№1
| No. | Relay |
|---|---|
| R1 | Ignition (IG2 Cut) |
| R2 | Ignition (ACC Cut) |
№2
| No. | A | Protected component |
|---|---|---|
| 31 years old | 7.5 | Ignition Switch (ST), PCM (STS) |
| 32 | 7.5 | Starter cut-off relay #1, starter cut-off relay 1 |
| Relay | ||
| R1 | Starter version #1 | |
№3 (2009-2012)
| No. | Relay |
|---|---|
| R1 | Rear seat heating |
| R2 | — |
Engine compartment
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Engine Compartment Fuse Box #1 Wiring Diagram
The primary fuse box under the hood is located in the engine compartment on the driver’s side. To open it, press the tabs.
| No. | A | Protected component |
|---|---|---|
| 1 | 15 | Left low beam headlight (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, high beam, number plate light, roof console light, tail lights, rear door ashtray lights, individual map tail light switch lights, seat heating switch lights, seat ventilation control units, fuse (passenger compartment fuse box #2): #7 |
| 5 | 10 | Right headlight high beam |
| 6 | 15 | Right low beam headlight (HID unit) |
| 7 | 7.5 | Reverse 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 | Windscreen wiper motor relay |
| 10 | 30 | Headlight washer relay |
| 11 | 20 | 2005-2008: Fog lights |
| 10 | 2009-2012: Fog lights | |
| 12 | 7.5 | Air conditioning compressor clutch |
| 13 | 15 | Brake Lights, High Brake Light. Adaptive Cruise Control (ACC) Unit (’06-’12), Horns, Relay Control Module |
| 14 | 40 | Rear window defroster relay, noise capacitor |
| 15 | 40 | Fuse (Passenger Compartment Fuse Box 1): No. 5, 6, 7, 8, 9; Fuse (Engine Compartment Fuse Box 1): No. 7 (’11 -’12) |
| 16 | 15 | Turn Signal/Hazard Warning Relay, Multiplex Integrated Control Unit (MICU) |
| 17 | 30 | VSA Modulator Control Unit (Engine) |
| 18 | 40 | VSA modulator control unit |
| 19 | 40 | Fuse (Passenger Compartment Fuse Box #1): #1, 2, 3, 4 |
| 20 | 40 | Fuse (fuse box #1 in the passenger compartment): #12, 13, 14, 15, 16, 17 |
| 21 years old | 40 | Fan Motor Relay |
| 22 | 120 | Battery, power distribution |
| 70 | Passenger compartment fuse box #1 | |
| 23 | 50 | Ignition switch (BAT), starter (starter cut-off relay 1, 2) |
| 50 | Fuse (fuse box #1 in the passenger compartment): #24, 25, 26, 27, 28 | |
| Relay | ||
| R1 | Fog light fan control | |
| R2 | Wiper | |
| R3 | Rear window heating | |
| R4 | Air conditioning compressor clutch | |
| R5 | Fan motor | |
Engine Compartment Fuse Box #2 Wiring Diagram
The secondary fuse box under the hood is located on the battery. To open it, press the tabs.
| No. | A | Protected component |
|---|---|---|
| 34 | 50 | Radiator Fan Control (RFC) |
| 35 year | — | — |
Relay box in the engine compartment
| No. | Relay |
|---|---|
| R1 | 2006-2012: Adaptive Cruise Control (ACC) |
| R2 | Daytime running lights (DRL) |
| R3 | Radiator Fan Control (RFC) |