Fuse box in the passenger compartment
| fuse No (current strength, A) | Protected electrical circuit |
| F1 (30 A) | Front door window lifts |
| F2 (10 A)*1 | High beam left headlight |
| F3 (10 A)*1 | High beam right headlight |
| F4 (10 A)*1 | Low beam left headlight |
| F5 (10 A)*1 | Low beam right headlight |
| F6 (5 A)*1 | Dimensions of headlights |
| F7 (5 A)*1 | Dimensions of rear lights and illumination |
| F8 (30 A) | Rear door power windows, rear window lifter lock relay (winding) |
| F9 (7,5 A)*1 | Rear fog light |
| F10 | Reserve |
| F11 (20 A) | Electrical equipment control unit, electric door locking drives (CL) |
| F12 (5 A) | Immobilizer, ESC control unit, steering angle sensor, brake light switch |
| F13 (10 A) | Interior lighting control unit, trunk light, glove compartment light, climate control unit (air conditioning)*2, climate control switch unit*2 |
| F14 (5 A)*2 | Rain sensor |
| F15 (15 A) | Windscreen washers, electrical equipment control unit (rear wiper) |
| F16 (15 A) | ERA-GLONASS system, heated seats, audio system (radio) |
| F17 (7,5 A)*1 | Daytime running lights (DRL) |
| F18 (7,5 A) | Brake lights |
| F19 (5 A) | Electronic engine control unit (ECU), electrical equipment control unit (EECU), additional ECU*2, instrument cluster, fuel pump relay (winding), starter relay (winding), AMT operating mode selector |
| F20 (5 A) | Airbag control unit |
| F21 (7,5 A) | Reversing lights, AMT control unit |
| F22 (5 A) | Electric power steering pump |
| F23 (5 A) | Parking sensors, electric headlights, electric headlight range control unit, windshield heating relay 1 (winding), windshield heating relay 2 (winding), rear window and outside mirror heating relay (winding) |
| F24 (15 A) | BUE (fuses F12, F13, F36) |
| F25 (5 A) | ERA-GLONASS control unit |
| F26 (15 A) | Turn signals, BUE |
| F27 (20A)*1 | Low beam |
| F27 (5 A)*2 | Low beam switch-on signal, high beam switch-on signal, fog lamp switch-on signal (PTF), rear fog lamp switch-on signal (RPTF) |
| F28 (15 A) | Sound signal (horn), signal for turning on the parking light*2 |
| F29 (25 A)*1 | Dimensions, high beam, PTF, horn relay (winding) |
| F30 (30 A) | N/A |
| F31 (5 A) | Instrument cluster |
| F32 (7,5 A) | BUE, ERA-GLONASS control unit, radio, additional socket relay in the trunk (winding), air conditioning fan relay (winding), air conditioning switch unit*1 |
| F33 (15 A) | Cigarette lighter |
| F34 (15 A) | Diagnostic connector, radio |
| F35 (5 A) | Heated side mirrors |
| F36 (5 A) | Electric side mirrors |
| F37 (30 A) | Starter Solenoid Relay Circuit |
| F38 (30 A) | Windscreen cleaner*1 |
| Additional BUE, windshield wiper*2 | |
| F39 (40 A)*1 | Electric fan of the air conditioning system |
| F40 | Reserve |
| F41 (25 A)*2 | Additional BUE, right headlight (DRL, high beam, side lights), left headlight (low beam, side lights) |
| F42 | Reserve |
| F43 (15 A)*2 | Additional BUE, fuse F19 |
| F44 (15 A) | Additional socket in the trunk |
| F45 (15 A) | Power off delay relay |
| F46 (25 A) | Additional BUE, PTF, ZPTF, interior lighting |
| F47 (25 A) | Additional BUE, left headlight (DRL, high beam), rear lights (side lights), right headlight (low beam) |
| F48 | Reserve |
| F49 | Reserve |
*1 - in Optima configuration without rain sensor
*2 - in the Top configuration with a rain sensor
Relay box in the cabin
| fuse No (current strength, A) | Protected electrical circuit |
| R1 (40 A) | Electric fan of the air conditioning system |
| R2 (40 A) | Heated rear window and outside mirrors |
| R3 (40 A) | Locking the rear power windows |
| R4 (20 A) | N/A |
| R5 (20 A) | Additional socket in the trunk |
Mounting block in the engine compartment
Description: 1 - +AKB; Ef1-Ef3, Ef12-Ef14, Ef23-Ef26 - MINI fuses; Ef4, Ef15, Ef21, Ef22 - fuses; Ef5-Ef11, Ef16-Ef18 - MAXI fuses; Er1-Er9 - relay; D1 - air conditioner compressor diode; D2 - cooling system diode.
| fuse No (current strength, A) | Protected electrical circuit |
| Ef1*2(10A) | PTF |
| Ef2 (7.5A) | BUE |
| Ef3 (25A) | Heated rear window and outside mirrors |
| Ef4 (25A) | ESC |
| Ef5 (70A) | Fuse chains F11, F24-F27, F34, F39, F41 |
| Ef6 (70A) | Ignition switch, fuse circuits F28, F31, F38, F43, F46, F47 |
| EF7 (50A) | ESC |
| Ef8 (30A)*1 | Socket in the trunk |
| Ef9 | Reserve |
| Ef10 (40A)*1 | Windscreen heater 1 |
| Ef11 (40A)*2 | Windscreen heater 2 |
| Ef12*3(30A) | Starter |
| Ef13 | Reserve |
| Ef14 (25A)*3 | Electronic engine management system |
| Ef14 (30A)*4 | |
| Ef15 (15A)*1,*3 | A/C Compressor Clutch Relay, A/C Compressor Clutch |
| Ef15 (25A)*1 | Cooling system fan |
| Ef16 (50A) | |
| Ef17 (70A) | AMT control unit |
| Ef18 (80A) | Electric pump of power steering (GUR) |
| Ef21 | Reserve |
| Ef22 (15A)*3 | Cooling system fan relay (winding), air conditioning compressor clutch relay (winding), oxygen concentration sensor, canister purge valve, camshaft position sensor |
| Ef23 (7.5A)*4 | Oxygen concentration sensor, electromagnetic valve for changing the length of the intake manifold (vAZ-21129 engine), purge valve of the adsorber, camshaft position sensor, valve of change of phases (VAZ-21179) |
| Ef24 (15A)*4 | ECU, cooling fan control unit, ignition coils, fuel injectors, fuel pump |
| Ef25 (15A)*4 | Fuel pump |
*1 - depending on the configuration
*2 - for Optima without rain sensor
*3 - with H4M engine
*4 - with VAZ-21129 and VAZ-21179 engines
Engine bay mounting block relay
| fuse No (current strength, A) | Protected electrical circuit |
| Er1 (20 A) | Alarm buzzer relay |
| Er2 | Reserve |
| Er3 (20 A)*1 | Starter relay |
| Er3 (35 A)*2 | |
| Er4 (35 A) | Engine Management System Main Relay |
| Er5 (20 A) | Air Conditioning Compressor Clutch Relay |
| Er6 (20 A) | Fuel pump relay*1 |
| Fuel pump and ignition coil relay*2 | |
| Er7 (35 A) | Windscreen Heating Relay 2 |
| Cooling system fan relay*2(without air conditioning) | |
| Er8 (35 A) | Windscreen Heating Relay 1 |
| Er9 (20 A) | Horn relay |
*1 - with H4M engine
*2 - with VAZ-21129 and VAZ-21179 engines
Before replacing a fuse in XRAY, you should first determine the reason for its blown condition. The manufacturer does not allow the use of fuses with a different current rating from those recommended in the tables below. This can lead to malfunctions in electrical equipment, short circuits and even car fires!