| Warning light | Signal source |
| Main beam warning light -K1- | T32a/14 |
| Alternator warning light -K2- | CAN bus Onboard control unit -J519- |
| Oil pressure warning light -K3- | T32a/27 |
| Brake system warning light -K118- | T32a/26, CAN bus ABS control unit -J104- |
| Handbrake warning light -K14- | T32a/25 |
| Rear fog light warning light -K13- | T32a/13 |
| Fog light warning light -K17- | T32a/30 |
| Seat belt warning light -K19- | CAN bus Airbag control unit -J234- |
| Coolant temperature and coolant shortage indicator warning light -K28- | T32a/18, CAN bus engine control unit -J623- |
| Glow period warning light -K29- | CAN bus Engine control unit -J623- |
| Oil level warning light -K38- | T32a/11 |
| ABS warning light -K47- | CAN bus ABS control unit -J104- |
| Dipped beam and rear lights warning light -K60- | CAN bus Onboard control unit -J519- |
| CCS warning light -K31- | CAN bus Onboard control unit -J519- |
| Left turn signal warning light -K65- | CAN bus Onboard control unit -J519- |
| Airbag warning light -K75- | CAN bus Airbag control unit -J234- |
| Exhaust emissions warning lamp -K83- | CAN bus Engine control unit -J623- |
| Electro/mechanical power steering warning light -K161- | CAN bus Onboard control unit -J519- |
| Right turn signal warning light -K94- | CAN bus Onboard control unit -J519- |
| Fuel reserve warning light -K105- | T32a/1, T32a/2 |
| Washer fluid low warning light -K106- | T32a/17 |
| Rear lid open warning light -K116- | CAN bus Onboard control unit -J519- |
| Electronic power control fault lamp -K132- | CAN bus Engine control unit -J623- |
| Door open warning light -K166- | CAN bus Onboard control unit -J519- |
| Selector lever lock warning light -K169- | CAN bus Automatic gearbox control unit -J217- , Double clutch gearbox mechatronics -J743- |
| Bonnet open warning light -K171- | CAN bus Onboard control unit -J519- |
| Warning light for tyre pressure display -K220- | CAN bus ABS control unit -J104- |
| Diesel particle filter warning light -K231- | CAN bus Engine control unit -J623- |
| Bulb failure warning light -K170- | CAN bus Onboard control unit -J519- |
| Warning light for engine cold -K249- | CAN bus Engine control unit -J623- |
| 1 | - | not assigned |
| 2 | - | not assigned |
| 3 | - | not assigned |
| 4 | - | Output for Interior light (31) |
| 5 | - | not assigned |
| 6 | - | not assigned |
| 7 | - | Input of light switch -E1- (fog lights) |
| 8 | - | not assigned |
| 9 | - | not assigned |
| 10 | - | Output for central locking motor in rear lid -V53- |
| 11 | - | Output for central locking motor in driver door -V56- , central locking motor in front passenger door -V57- , central locking motor in rear left door, lock -V214- , central locking motor in rear right door, lock -V215- |
| |
| 12 | - | Output for central locking motor in driver door -V56- , motor for SAFE function of central locking in driver door -V161- |
| 13 | - | Output for motor for SAFE function of central locking in driver door -V161- , motor for SAFE function of central locking in front passenger door -V162- , motor for SAFE function of central locking in rear left door -V163- , motor for SAFE function of central locking in rear right door -V164- |
| 14 | - | Input (31) - for central locking |
| 15 | - | Output for central locking motor in front passenger door -V57- , motor for SAFE function of central locking in front passenger door -V162- , central locking motor in rear left door, lock -V214- , central locking motor in rear right door, lock -V215- |
| 16 | - | Input (30) - for central locking |
| 17 | - | Input of central locking lock unit, rear left -F222- |
| 18 | - | Input of central locking lock unit, rear right -F223- |
| 19 | - | Input of door contact switch, driver side -F2- (31) |
| 20 | - | Input of door contact switch, front passenger side -F3- (31) |
| 21 | - | Input of central locking lock unit, front passenger side -F221- |
| 22 | - | Input of central locking lock unit, driver side -F220- |
| 23 | - | Input of rear lid remote release button -E233- , rear lid handle release button -E234- (31) (on vehicles without central locking) |
| 24 | - | Input of central locking lock unit, driver side -F220- , central locking lock unit, front passenger side -F221- |
| 25 | - | Input of interior locking switch, driver side -E150- |
| 26 | - | Input of door contact switch, rear right -F11- |
| 27 | - | Input of bonnet contact switch -F266- (31) |
| 28 | - | Input of hazard warning light button -E229- (31) |
| 29 | - | Input of horn activation -H- (31) |
| 30 | - | Input of rear lid lock unit -F256- (31) |
| 31 | - | not assigned |
| 32 | - | Input of turn signal switch -E2- (right turn signal) (31) |
| 33 | - | Input of turn signal switch -E2- (left turn signal) (31) |
| 34 | - | Input of door contact switch, rear left -F10- |
| 35 | - | not assigned |
| 36 | - | not assigned |
| 37 | - | not assigned |
| 38 | - | Output for heated exterior mirror, driver side, heated exterior mirror, front passenger side |
| 39 | - | Input (31) |
| 40 | - | not assigned |
| 41 | - | not assigned |
| 42 | - | Input of ignition starter switch -D- (86s) |
| 43 | - | Input of brake light switch -F- (54) |
| 44 | - | Input of ignition starter switch -D- (15) |
| 45 | - | Input of light switch -E1- (58R) |
| 46 | - | not assigned |
| 47 | - | not assigned |
| 48 | - | not assigned |
| 49 | - | not assigned |
| 50 | - | not assigned |
| 51 | - | not assigned |
| 52 | - | Output for fuel supply relay -J643- (31) |
| 53 | - | not assigned |
| 54 | - | not assigned |
| 55 | - | not assigned |
| 56 | - | Output for hazard warning light system warning light -K6- + bulb for button illumination -L76- |
| 57 | - | not assigned |
| 58 | - | Output for warning light for SAFE function of central locking -K133- |
| 59 | - | Output for interior locking warning light, driver side -K174- |
| 60 | - | Output for heated rear window warning light -K10- |
| 61 | - | not assigned |
| 62 | - | not assigned |
| 63 | - | not assigned |
| 64 | - | Input for heated exterior mirror driver's side -Z4- , heated exterior mirror front passenger's side -Z5- |
| 65 | - | Output for front interior light -W1- , glove box light -W6- (30g) |
| 66 | - | Input for front interior light -W1- , glove box light -W6- (30) |
| 67 | - | not assigned |
| 68 | - | Input for windscreen wiper motor -V- (30) |
| 69 | - | Output for windscreen wiper motor -V- (1st stage) |
| 70 | - | Input (31) |
| 71 | - | Output for windscreen wiper motor -V- (2nd stage) |
| 72 | - | Output for high tone horn -H2- , low tone horn -H7- |
| 73 | - | Input (30) for high tone horn -H2- , low tone horn -H7- |
| 1 | - | not assigned |
| 2 | - | not assigned |
| 3 | - | not assigned |
| 4 | - | not assigned |
| 5 | - | not assigned |
| 6 | - | not assigned |
| 7 | - | not assigned |
| 8 | - | not assigned |
| 9 | - | not assigned |
| 10 | - | not assigned |
| 11 | - | Input for reversing light bulb, left -M16- , reversing light bulb, right -M17- , static cornering light, left -M51- , static cornering light, right -M52- |
| |
| 12 | - | not assigned |
| 13 | - | Input for turn signal (30) |
| 14 | - | Output for turn signal bulb, front left -M5- , turn signal bulb, rear left -M6- , side turn signal bulb, left -M18- |
| 15 | - | Output for turn signal bulb, front right -M7- , turn signal bulb, rear right -M8- , side turn signal bulb, right -M19- |
| 16 | - | Output for brake light bulb, left -M9- , brake light bulb, right -M10- (54) |
| 17 | - | LIN bus door control unit driver's side -J386- , door control unit front passenger's side -J387- , rear left door control unit -J388- , rear right door control unit -J389- |
| 18 | - | Drive train CAN bus, low |
| 19 | - | Drive train CAN bus, high |
| 20 | - | Convenience CAN bus, high |
| 21 | - | Convenience CAN bus, low |
| 22 | - | Drive train CAN bus low (switched) |
| 23 | - | Drive train CAN bus high (switched) |
| 24 | - | not assigned |
| 25 | - | not assigned |
| 26 | - | not assigned |
| 27 | - | Input of intermittent wiper switch -E22- (1st stage) |
| 28 | - | not assigned |
| 29 | - | not assigned |
| 30 | - | not assigned |
| 31 | - | Input of heated rear window button -E230- (31) |
| 32 | - | Input of windscreen wiper motor -V- |
| 33 | - | not assigned |
| 34 | - | Input of light switch -E1- (58L) |
| 35 | - | not assigned |
| 36 | - | not assigned |
| 37 | - | Diagnosis wire K |
| 38 | - | Input (31) |
| 39 | - | Input (30) |
| 40 | - | not assigned |
| 41 | - | not assigned |
| 42 | - | not assigned |
| 43 | - | not assigned |
| 44 | - | not assigned |
| 45 | - | not assigned |
| 46 | - | not assigned |
| 47 | - | not assigned |
| 48 | - | Input of reversing light switch -F4- (not valid for vehicles with automatic gearbox) |
| 49 | - | Input of alternator with voltage regulator -CX1- terminal L |
| 50 | - | Input of ignition starter switch -D- (50) |
| 51 | - | Input of ignition starter switch -D- (75) |
| 52 | - | Input of light switch -E1- (for headlight washer system) |
| 53 | - | Input of intermittent wiper switch -E22- (2nd stage) |
| 54 | - | not assigned |
| 55 | - | not assigned |
| 56 | - | not assigned |
| 57 | - | not assigned |
| 58 | - | Input of exterior mirror heating button |
| 59 | - | Input of fuse in fuse holder A on the battery (30 analogue) |
| 60 | - | Input (31 analog) |
| 61 | - | Input of rear wiper switch -E34- |
| | - | Output for rear window wiper motor -V12- |
| 62 | - | Input of intermittent wiper control -E38- |
| 63 | - | Output for heated rear window -Z1- |
| 64 | - | not assigned |
| 65 | - | not assigned |
| 66 | - | not assigned |
| 67 | - | Input for heated rear window -Z1- (30) |
| 68 | - | not assigned |
| 69 | - | not assigned |
| 70 | - | not assigned |
| 71 | - | not assigned |
| 72 | - | not assigned |
| 73 | - | not assigned |
| No. | | Designation in the current flow diagram | Nominal value | | Function/component | Terminal |
| 1 | - | Fuse 1 on fuse holder B -SB1- | 5A | - | Radio -R- , radio pre-installation for aftermarket units | 15a |
| 2 | - | Fuse 2 on fuse holder B -SB2- | | - | not assigned | |
| 3 | - | Fuse 3 on fuse holder B -SB3- | 7,5A | - | Engine electronics, Onboard control unit -J519- , Headlight range control adjuster -E102- , Headlight range control motor, left -V48- , Headlight range control motor, right -V49- , Dash panel insert -K- | 15a |
| 4 | - | Fuse 4 on fuse holder B -SB4- | 5A | - | ABS control unit -J104- | 15a |
| 5 | - | Fuse 5 on fuse holder B -SB5- | | - | not assigned | |
| 6 | - | Fuse 6 on fuse holder B -SB6- | 10A | - | Reversing light bulb, left -M16- , Reversing light bulb, right -M17- (on vehicles with manual gearbox) | 15a |
| 7 | - | Fuse 7 on fuse holder B -SB7- | 15A | - | Engine control unit -J623- , Ignition system (on vehicles with manual gearbox) | 87a |
| 7,5A | - | Engine control unit -J623- | 30a |
| 5A | - | Engine control unit -J623- | 30a |
| 8 | - | Fuse 8 on fuse holder B -SB8- | 5A | - | Brake pedal switch -F47- , Clutch pedal switch -F36- , Radiator fan control unit -J293- | 87a |
| 9 | - | Fuse 9 on fuse holder B -SB9- | 5A | - | Air conditioning system control unit -J301- | 15a |
| 10 | - | Fuse 10 on fuse holder B -SB10- | 7,5A | - | Air conditioning system relay -J32- | 15a |
| |
| |
| 11 | - | Fuse 11 on fuse holder B -SB11- | 5A | - | heated and adjustable exterior mirror | 15a |
| 12 | - | Fuse 12 on fuse holder B -SB12- | | - | not assigned | |
| 13 | - | Fuse 13 on fuse holder B -SB13- | | - | not assigned | |
| |
| 14 | - | Fuse 14 on fuse holder B -SB14- | | - | not assigned | |
| |
| 15 | - | Fuse 15 on fuse holder B -SB15- | | - | not assigned | |
| |
| 16 | - | Fuse 16 on fuse holder B -SB16- | 5A | - | Engine control unit -J623- , Fuel pump relay -J17- , Speedometer sender -G22- | 15a |
| 17 | - | Fuse 17 on fuse holder B -SB17- | 7,5A | - | Day driving light bulb, left -L174- , Day driving light bulb, right -L175- | 30a |
| |
| 18 | - | Fuse 18 on fuse holder B -SB18- | 5A | - | heated exterior mirror driver's side -Z4- , heated exterior mirror front passenger's side -Z5- | 30a |
| 19 | - | Fuse 19 on fuse holder B -SB19- | 5A | - | Ignition starter switch -D- terminal 30 | 30a |
| 20 | - | Fuse 20 on fuse holder B -SB20- | | - | not assigned | |
| |
| 21 | - | Fuse 21 on fuse holder B -SB21- | 10A | - | static cornering light, left -M51- , static cornering light, right -M52- | 30a |
| |
| |
| 22 | - | Fuse 22 on fuse holder B -SB22- | 7,5A | - | Control unit in dash panel insert -J285- , 16-pin connector -T16b- at diagnostic connection, Air conditioning system control unit -J301- | 30a |
| |
| 23 | - | Fuse 23 on fuse holder B -SB23- | 15A | - | Interior light, glove box light -W6- | 30a |
| |
| |
| 24 | - | Fuse 24 on fuse holder B -SB24- | 5A | - | Onboard control unit -J519- | 30a |
| |
| |
| 25 | - | Fuse 25 on fuse holder B -SB25- | | - | not assigned | |
| 26 | - | Fuse 26 on fuse holder B -SB26- | 10A | - | Rear window wiper motor -V12- | 15a |
| 27 | - | Fuse 27 on fuse holder B -SB27- | | - | not assigned | |
| 28 | - | Fuse 28 on fuse holder B -SB28- | 10A | - | Engine electronics | 87a |
| 29 | - | Fuse 29 on fuse holder B -SB29- | 10A | - | Engine electronics | 87a |
| 30 | - | Fuse 30 on fuse holder B -SB30- | 15A | - | Fuel pump for predelivery -G6- (on petrol engines) | 87a |
| 20A | - | Ignition transformer -N152- , ignition system (on petrol engines) |
| |
| 31 | - | Fuse 31 on fuse holder B -SB31- | 10A | - | Lambda probe -G39- , Lambda probe after catalytic converter -G130- | 87a |
| 32 | - | Fuse 32 on fuse holder B -SB32- | 15A | - | Fuel metering valve -N290- | 87a |
| 33 | - | Fuse 33 on fuse holder B -SB33- | 15A | - | Engine control unit -J623- (on petrol engines) | 87a |
| 30A | - | Engine control unit -J623- (on diesel engines) |
| |
| 34 | - | Fuse 34 on fuse holder B -SB34- | 20A | - | Engine control unit -J623- , engine electronics | 87a |
| |
| 35 | - | Fuse 35 on fuse holder B -SB35- | 5A | - | Light switch -E1- | 30a |
| 36 | - | Fuse 36 on fuse holder B -SB36- | 15A | - | 2-filament lamp for left headlight -L1- , 2-filament lamp for right headlight -L2- , Main beam warning light -K1- | 56a |
| 37 | - | Fuse 37 on fuse holder B -SB37- | 7,5A | - | Rear fog light bulb, right -L47- , Rear fog light warning light -K13- | 55a |
| 38 | - | Fuse 38 on fuse holder B -SB38- | 10A | - | Fog light bulb, left -L22- , Fog light bulb, right -L23- | 55a |
| 39 | - | Fuse 39 on fuse holder B -SB39- | 30A | - | Fresh air blower -V2- | 75x |
| 40 | - | Fuse 40 on fuse holder B -SB40- | 15A | - | Rear wiper switch -E34- | 75x |
| 41 | - | Fuse 41 on fuse holder B -SB41- | | - | not assigned | |
| 42 | - | Fuse 42 on fuse holder B -SB42- | 25A | - | heated rear window -Z1- | 30a |
| 43 | - | Fuse 43 on fuse holder B -SB43- | 20A | - | High tone horn -H2- , Low tone horn -H7- | 30a |
| 44 | - | Fuse 44 on fuse holder B -SB44- | 20A | - | Windscreen wiper motor -V- | 30a |
| 45 | - | Fuse 45 on fuse holder B -SB45- | 10A | - | Central locking motor in rear lid -V53- (on vehicles without central locking) | 30a |
| 25A | - | Central locking motor in rear lid -V53- (on vehicles with central locking) |
| 46 | - | Fuse 46 on fuse holder B -SB46- | 20A | - | Engine electronics | 30a |
| 5A | - | Engine control unit -J623- |
| 47 | - | Fuse 47 on fuse holder B -SB47- | 15A | - | Socket -U- , 12 V socket -U5- | 30a |
| 48 | - | Fuse 48 on fuse holder B -SB48- | 15A | - | ABS control unit -J104- | 30a |
| 49 | - | Fuse 49 on fuse holder B -SB49- | 15A | - | Turn signal | 30a |
| 50 | - | Fuse 50 on fuse holder B -SB50- | 10A | - | Radio -R- | 30a |
| |
| 51 | - | Fuse 51 on fuse holder B -SB51- | 25A | - | Door control unit driver's side -J386- , Rear right door control unit -J389- | 30a |
| 52 | - | Fuse 52 on fuse holder B -SB52- | 25A | - | Door control unit front passenger's side -J387- , Rear left door control unit -J388- | 30a |
| 53 | - | Fuse 53 on fuse holder B -SB53- | 5A | - | Side light bulb, left -M1- , tail light bulb, left -M4- , number plate light, left -X4- | 58L |
| 54 | - | Fuse 54 on fuse holder B -SB54- | | - | not assigned | |
| |
| 55 | - | Fuse 55 on fuse holder B -SB55- | | - | not assigned | |
| 56 | - | Fuse 56 on fuse holder B -SB56- | 5A | - | Tail light bulb, right -M2- , side light bulb, right -M3- , number plate light, right -X5- | 58R |
| 57 | - | Fuse 57 on fuse holder B -SB57- | 15A | - | 2-filament lamp for left headlight -L1- | 56b |
| |
| 58 | - | Fuse 58 on fuse holder B -SB58- | 15A | - | 2-filament lamp for right headlight -L2- | 56b |
| |
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