P54.33-4405-79
Vehicle with gasoline engine; illustration shows model 172.4 as of 01.03.2016 |
A1 | Instrument cluster | A1e51 | Brake system warning lamp | |
A1e1 | Left turn signal indicator light | A1e54 | Coolant temperature warning lamp | |
A1e2 | Right turn signal indicator light | A1e58 | Engine diagnosis indicator lamp | |
A1e3 | High beam indicator lamp | A1e59 | DISTRONIC warning lamp (up to 29.02.2016 with code 233 (DISTRONIC PLUS); as of 01.03.2016 with code 239 (DISTRONIC PLUS) and code 258 (COLLISION PREVENTION ASSIST)) | |
A1e4 | Fuel reserve indicator lamp | A1e66 | Tire pressure monitor warning lamp (with CODE 475 (Tire pressure monitor)) | |
A1e9 | Seat belt warning lamp | A1e67 | Low beam indicator lamp | |
A1e10 | Parking brake indicator lamp | A1p1 | Coolant temperature gauge | |
A1e11 | Parking brake indicator lamp | A1p2 | Fuel level indicator | |
A1e15 | Supplemental restraint system indicator lamp | A1p5 | Tachometer | |
A1e17 | Antilock brake system indicator lamp | A1p8 | Speedometer | |
A1e18 | Rear fog lamp indicator lamp | A1p12 | Gear indicator (transmission 725.0) | |
A1e32 | ESP®/ASR OFF warning lamp | A1p13 | Multifunction display | |
A1e38 | Standing light indicator lamp (model 172.475 or vehicles as of 01.06.2012) | A1p16 | Transmission mode display (transmission 725.0) | |
A1e41 | Electronic Stability Program warning lamp |
P54.32-9652-79
Vehicle with gasoline engine; illustration shows model 172.447 up to 29.02.2016 |
A1 | Instrument cluster | A1e51 | Brake system warning lamp | |
A1e1 | Left turn signal indicator light | A1e54 | Coolant temperature warning lamp | |
A1e2 | Right turn signal indicator light | A1e57 | Fog lamp indicator lamp (except CODE 615 (Bi-xenon headlamp unit with active curve lights) and except CODE 621 (Intelligent Light System (left-hand traffic)) and except CODE 622 (Intelligent Light System), until 31.05.2015) | |
A1e3 | High beam indicator lamp | A1e58 | Engine diagnosis indicator lamp | |
A1e4 | Fuel reserve indicator lamp | A1e59 | DISTRONIC warning lamp (up to 29.02.2016 with code 233 (DISTRONIC PLUS); as of 01.03.2016 with code 239 (DISTRONIC PLUS) and code 258 (COLLISION PREVENTION ASSIST)) | |
A1e9 | Seat belt warning lamp | A1e66 | Tire pressure monitor warning lamp (with CODE 475 (Tire pressure monitor)) | |
A1e10 | Parking brake indicator lamp | A1e67 | Low beam indicator lamp | |
A1e11 | Parking brake indicator lamp | A1p1 | Coolant temperature gauge | |
A1e15 | Supplemental restraint system indicator lamp | A1p2 | Fuel level indicator | |
A1e17 | Antilock brake system indicator lamp | A1p5 | Tachometer | |
A1e18 | Rear fog lamp indicator lamp | A1p8 | Speedometer | |
A1e32 | ESP®/ASR OFF warning lamp | A1p12 | Gear indicator (transmission 722.9, 725.0) | |
A1e38 | Standing light indicator lamp (model 172.475 or vehicles as of 01.06.2012) | A1p13 | Multifunction display | |
A1e41 | Electronic Stability Program warning lamp | A1p16 | Transmission mode display (transmission 722.9, 725.0) |
The following components integrated in the instrument cluster are not shown:
Warning buzzer (A1h1)
Function check of turn signal lights, acoustic (A1h2)
Instrument illumination brightness control (A1r1)
P54.33-4406-79
Vehicle with diesel engine; illustration shows model 172.4 with gasoline engine as of 01.03.2016 |
A1 | Instrument cluster | A1e41 | Electronic Stability Program warning lamp | |
A1e1 | Left turn signal indicator light | A1e51 | Brake system warning lamp | |
A1e2 | Right turn signal indicator light | A1e54 | Coolant temperature warning lamp | |
A1e3 | High beam indicator lamp | A1e58 | Engine diagnosis indicator lamp | |
A1e4 | Fuel reserve indicator lamp | A1e59 | DISTRONIC warning lamp (up to 29.02.2016 with code 233 (DISTRONIC PLUS); as of 01.03.2016 with code 239 (DISTRONIC PLUS) and code 258 (COLLISION PREVENTION ASSIST)) | |
A1e9 | Seat belt warning lamp | A1e66 | Tire pressure monitor warning lamp (with CODE 475 (Tire pressure monitor)) | |
A1e10 | Parking brake indicator lamp | A1e67 | Low beam indicator lamp | |
A1e11 | Parking brake indicator lamp | A1p1 | Coolant temperature gauge | |
A1e15 | Supplemental restraint system indicator lamp | A1p2 | Fuel level indicator | |
A1e16 | Preglow indicator lamp | A1p5 | Tachometer | |
A1e17 | Antilock brake system indicator lamp | A1p8 | Speedometer | |
A1e18 | Rear fog lamp indicator lamp | A1p12 | Gear indicator (transmission 725.0) | |
A1e32 | ESP®/ASR OFF warning lamp | A1p13 | Multifunction display | |
A1e38 | Standing lights indicator lamp (as of 01.06.2012) | A1p16 | Transmission mode display (transmission 725.0) |
P54.32-9653-79
Vehicle with diesel engine; illustration shows model 172.403 up to 29.02.2016 |
A1 | Instrument cluster | A1e51 | Brake system warning lamp | |
A1e1 | Left turn signal indicator light | A1e54 | Coolant temperature warning lamp | |
A1e2 | Right turn signal indicator light | A1e57 | Fog lamp indicator lamp (except CODE 615 (Bi-xenon headlamp unit with active curve lights) and except CODE 621 (Intelligent Light System (left-hand traffic)) and except CODE 622 (Intelligent Light System), until 31.05.2015) | |
A1e3 | High beam indicator lamp | A1e58 | Engine diagnosis indicator lamp | |
A1e4 | Fuel reserve indicator lamp | A1e59 | DISTRONIC warning lamp (up to 29.02.2016 with code 233 (DISTRONIC PLUS); as of 01.03.2016 with code 239 (DISTRONIC PLUS) and code 258 (COLLISION PREVENTION ASSIST)) | |
A1e9 | Seat belt warning lamp | A1e66 | Tire pressure monitor warning lamp (with CODE 475 (Tire pressure monitor)) | |
A1e10 | Parking brake indicator lamp | A1e67 | Low beam indicator lamp | |
A1e11 | Parking brake indicator lamp | A1p1 | Coolant temperature gauge | |
A1e15 | Supplemental restraint system indicator lamp | A1p2 | Fuel level indicator | |
A1e16 | Preglow indicator lamp | A1p5 | Tachometer | |
A1e17 | Antilock brake system indicator lamp | A1p8 | Speedometer | |
A1e18 | Rear fog lamp indicator lamp | A1p12 | Gear indicator (transmission 722.9, 725.0) | |
A1e32 | ESP®/ASR OFF warning lamp | A1p13 | Multifunction display | |
A1e38 | Standing lights indicator lamp (as of 01.06.2012) | A1p16 | Transmission mode display (transmission 722.9, 725.0) | |
A1e41 | Electronic Stability Program warning lamp |
The following components integrated in the instrument cluster are not shown:
Warning buzzer
Turn signal light function check, acoustic
Instrument illumination brightness control
Location
The instrument cluster is located in the dashboard on the driver-side.
Tasks
The instrument cluster has the following tasks:
Reading in of sensors and signals
Evaluation of input factors
Actuation of components
Output of warning tones and indicator tones
Output of signals
Reading in of sensors and signals
The instrument cluster reads in the input factors via the following connections:
Interior CAN (CAN B)
Chassis CAN (up to 29.02.2016) or chassis CAN 2 (as of 01.03.2016)
Interior CAN
The signals are read in by the instrument cluster over the interior CAN.
The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).
Chassis CAN (up to 29.02.2016) or chassis CAN 2 (as of 01.03.2016)
The signals are read in by the instrument cluster via the chassis CAN (up to 29.02.2016) or chassis CAN 2 (as of 01.03.2016).
The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).
Evaluation of input factors
The input factors that have been read in are evaluated by the integrated microprocessor and the relevant components are then actuated.
Actuation of components
The instrument cluster directly actuates all internal actuators (e.g. indicator and warning lamps, stepper motors of displays, multifunction display) as well as the instrument illumination.
Output of warning tones and indicator tones
To issue warning and information tones which are requested by the systems installed in the vehicle, the instrument cluster actuates the warning buzzer or the acoustic function check for the turn signal lights (output of turn signal ticking).
Output of signals
The signals are issued over the following connections:
Interior CAN
Chassis CAN (up to 29.02.2016) or chassis CAN 2 (as of 01.03.2016)
Interior CAN
The signals are sent by the instrument cluster over the interior CAN.
The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).
Chassis CAN (up to 29.02.2016) or chassis CAN 2 (as of 01.03.2016)
The signals are sent by the instrument cluster via the chassis CAN (up to 29.02.2016) or chassis CAN 2 (as of 01.03.2016).
The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).