Hyundai Santa Fe 2nd generation was produced in 2006, 2007, 2008, 2009, 2010, 2011 and 2012. During this period, Santa Fe 2 underwent restyling and facelift. In our article you will find a description of the location of all electronic control units and sensors, as well as a description of the fuses and relays of the Hyundai Santa Fe 2nd generation with block diagrams and photo examples of execution. Let’s highlight the fuse responsible for the cigarette lighter.

Control unit layout diagram
General location of electronic control units

Appointment
- ABS electronic control unit – near the brake booster
- Air conditioner/heater control unit – in the air conditioner/heater control panel
- Sunlight sensor (air conditioning system)
- Impact sensor (SRS), left.
- Shock sensor (SRS), right.
- Side impact sensor, driver’s side – B-pillar
- Side impact sensor, rear left
- Side impact sensor, passenger side – Center pillar
- Side impact sensor, rear right
- Anti-theft alarm – Left suspension strut
- Audio output amplifier – under the seat
- Rechargeable battery
- Diagnostic Connector (DLC) 1 (16-pin)
- Diagnostic Connector (DLC) 2 (20-pin) – near the brake booster
- Electronic engine control unit
- Electronic engine mount control unit
- Engine oil level control unit – behind the central part of the instrument panel
- Fuse/relay block, engine compartment 1
- Fuse/relay block, engine compartment 2
- Fuse/relay block, instrument panel
- Heater fan motor relay – in the fuse/relay block under the instrument panel
- Heater fan motor resistor (front) – behind glove box
- Heater fan motor resistor (with rear air conditioning) – right side of luggage compartment
- Sound signal, lion.
- Audible signal, right.
- Electronic immobilizer control unit – on the steering column
- Immobilizer ring antenna – near the ignition switch
- 28 Multifunction control unit – in the fuse/relay block under the instrument panel – functions: Air conditioner/heater fan motor, anti-theft system, central locking, daytime running lights, heated door mirrors, with full locking system, electric windows, fog lights, hazard warning lights, headlight washers, heated rear window, interior lights, front marker lights, rear marker lights, windshield wiper/washer
- Ambient air temperature sensor
- Parking system control unit – left side of luggage compartment
- Rear window wiper/washer control unit – Rear pillar
- Driver’s seat heating control unit – under the seat
- Passenger seat heating control unit – under the seat
- Electric sunroof control unit – in the sunroof drive motor
- SRS electronic control unit
- Transfer case control unit – next to the heater fan motor
- Electronic control unit for automatic transmission (automatic transmission) – petrol – in the electronic engine control unit
- Electronic transmission control unit (automatic transmission) – Diesel – behind the glove box
- Selector and/or ignition key lock control unit
- Transmission control system relay 1
- Rain sensor (windshield wiper) ∕sunlight sensor
- Lateral movement sensor – under the mat
Fuse box in the passenger compartment
Located under the dashboard behind a protective cover.


Fuse description
| 1 | 10A START – Anti-theft system |
| 2 | 30A P/WDW LH – Power window lifter left rear door |
| 3 | 30A P/WDW RH - Power window lifter of the right rear door |
| 4 | 20A S/ROOF – Electric sunroof drive |
| 5 | 30A P/SEAT – Power seat control unit |
| 6 | 30A SAFATY PWR – Power window lifter module |
| 7 | 10A MIRR HTD – Mirror Control Unit |
| 8 | 15A A/BAG 2 – Passive safety system control unit, Airbags |
| 9 | 15A A/BAG 1 – Passive safety system control unit, Airbags |
| 10 | 10A ROOM LP – Instrument cluster, front door light bulbs, interior light bulbs |
| 11 | 10A A/CON – Heating, air conditioning and ventilation control unit |
| 12 | 25A S/WARMER – Driver and front passenger seat heating switches |
| 13 | 30A P/AMP – Audio amplifier |
| 14 | 15A P/OUTLER CTR – Socket for connecting additional equipment in the floor tunnel lining |
| 15 | 25A P/OUTLET – Socket for connecting additional equipment in the luggage compartment |
| 16 | 15A C/LIGHTER – Cigarette lighter |
| 17 | 20A DR/LOCK – Central door locking system |
| 18 | 10A A/BAG IND – Instrument cluster |
| 19 | 10A ATM LOCK – Exterior light switch lever, steering shaft position sensor, electronic stability program (ESP) switch |
| 20 | 10A T/SIG – Hazard warning switch |
| 21 | Reserve |
| 22 | 15A ADG PEDAL – Brake light switch |
| 23 | 15A HAZARD – Hazard warning switch, exterior light switch lever, body electrical control unit, mirror control unit |
| 24 | 15A RR WIPER – Rear door wiper |
| 25 | Reserve |
| 26 | 10A A/CON SW – Heating, air conditioning and ventilation control unit |
| 27 | 10A CLASTER – Instrument cluster, audio head unit, tire pressure monitoring module (depending on equipment) |
| 28 | 10A BCM 1 – Body Electrical Control Unit |
| 29 | 15A FUEL LID – Fuel tank lid lock actuator |
| 30 | 10A B/ALARM HORN – Anti-theft alarm sound |
| 31 | 15A RR A/CON – Heating, air conditioning and ventilation control unit |
| 32 | 10A RR FOG/BWS – Fog light bulbs |
| 33 | 10A IMS – Rain sensor |
| 34 | 10A AUDIO 2 – Audio system head unit, digital clock, mirror control unit |
| 35 | 30A BLOWER – Air blower |
| 36 | 15A STOP LP – Brake light switch |
| 37 | 20A DRL – Daytime Running Lights |
| 38 | 10A BCM 3 – Body Electrical Control Module |
| 39 | 15A CLOCK – Digital clock |
| 40 | 15A AUDIO 1 – Audio system head unit, digital clock |
| 41 | 10A ATM – Interior lights, luggage compartment light, instrument cluster |
| 42 | Reserve |
| 43 | 10A BCM 2 – Power Seat Control Module |
Fuse number 16 at 15A is responsible for the cigarette lighter. And for additional sockets – numbers 14 and 15.
Blocks under the hood
Main unit
Located in the left part of the engine compartment.


Fuse designations
| 1 | 10A B/UP LP – Speed sensor, automatic transmission control unit |
| 2 | 10A H/LP – Block headlights |
| 3 | 10A ECU – Engine Control Unit, Automatic Transmission Control Unit |
| 4 | 20A H/LP HI – High beam lamps |
| 5 | 10A SENSOR – Immobilizer, fuel pump relay, heating, air conditioning and ventilation system relay |
| 6 | 15A SENSOR – Mass air flow sensor, oxygen concentration sensors |
| 7 | 20A IG COIL – Ignition coils |
| 8 | 15A FUEL PUMP – Fuel pump |
| 9 | 25A FR WIPER – Windshield washer, rain sensor, windshield wiper |
| 10 | 15A TCU – Automatic Transmission Control Unit |
| 11 | 10A ABS – Anti-lock brake system (ABS) control unit |
| 12 | 10A COOLING – Heating, air conditioning and ventilation system |
| 13 | 40A IGN – Ignition switch (lock) |
| 14 | 15A SENSOR – Engine control unit, solenoid valves of the variable valve timing system |
| 15 | 40A ECU MAIN – Engine Control Unit |
| 16 | 10A TAIL LH – Left tail light bulb |
| 17 | SPARE – Reserve |
| 18 | SPARE – Reserve |
| 19 | SPARE – Reserve |
| 20 | SPARE – Reserve |
| 21 | SPARE – Reserve |
| 22 | 10A FR FOG – Fog light bulbs |
| 23 | 50A B+ – Main fuse |
| 24 | 30A CON FAN – Heating, air conditioning and ventilation system |
| 25 | 40A IGN – Ignition switch (lock), starter relay |
| 26 | 40A ABS – Anti-lock brake system (ABS) control unit |
| 27 | 40A RAD FAN – Engine cooling system radiator fan motor |
| 28 | 20A ABS – Anti-lock brake system (ABS) control unit |
| 29 | 10A A/CON – Heating, air conditioning and ventilation system |
| 30 | 20A ATM – Body electrical control unit, engine control unit, automatic transmission control unit, reverse light bulbs |
| 31 | 40A P/WDW – Power windows |
| 32 | Reserve |
| 33 | 50A B+ – Anti-theft alarm, power seat control unit, fog lights, headlight washer |
| 34 | 10A TAIL RH – Right tail light bulb |
| 35 | 125A DSL – Fuse Block |
| 36 | 15A HORN – Sound signal |
| 37 | 40A BLR – Engine cooling system radiator fan motor |
| 38 | 15A H/LP LO LH – Left headlight low beam bulb |
| 39 | 10A H/LP HI IND – Instrument cluster |
| 40 | 10A ALT DSL – Generator |
| 41 | 15A DEICER – Windscreen Defrost Mode |
| 42 | 30A RR HTD – Electric heated rear door window |
| 43 | Reserve |
| 44 | 15A H/LP LO RH – Right headlight low beam bulb |
| 45 | 150A ALT – Main fuse |
Relay decoding
| R1 | ATM – Reverse light relay |
| R2 | RAD FAN – Engine cooling system radiator fan motor relay |
| R3 | FR FOG – Fog light relay |
| R4 | A/CON – Heating, air conditioning and ventilation relay |
| R5 | A/CON – High beam lamp relay |
| R6 | ECU MAIN – Engine control unit relay |
| R7 | START – Starter relay |
| R8 | CON FAN – Heating, air conditioning and ventilation system relay |
| R9 | CON FAN – Heating, air conditioning and ventilation system relay |
| R10 | TAIL LP – Tail light relay |
| R11 | H/LP LO LH – Left headlight low beam lamp relay |
| R12 | H/LP LO RH – Right headlight low beam lamp relay |
| R13 | RR HTD – Tailgate window heating relay |
| R14 | DEICER – Windshield Defroster Relay |
| R15 | HORN – Horn relay |
| R16 | FR WIPER – Windshield washer relay |
| R17 | RAIN SNRS – Rain sensor relay |
| R18 | FUEL PUMP – Fuel pump relay |
Additional unit
It is installed mainly on models with diesel engines.


Description
| GLOW PLUG FUSIBLE LINK | 80A Glow plug relay |
| FUEL FILTER HEATER | 30A Fuel filter heater relay |
| PTC HEATER #1 | 40A Heater Relay RTS 1 |
| PTC HEATER #2 | 40A Heater Relay RTS 2 |
| PTC HEATER #3 | 40A Heater Relay RTS 3 |
| R1 | Fuel filter heater relay |
| R2 | Heater relay RTS 2 |
| R3 | Reserve |
| R4 | Heater relay RTS 1 |
| R5 | Heater relay RTS 3 |