Difference between revisions of "Distronic"

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====Initialization====
 
====Initialization====
 
Bootup phase is about 30 seconds. The device needs to detect some particular frame in order to not deem itself faulty.
 
Bootup phase is about 30 seconds. The device needs to detect some particular frame in order to not deem itself faulty.
 +
 +
====Communication====
 +
N47-5 (ESP, BAS control unit):
 +
 +
'''Note: W209/215/220 have a different interface compared to W211/219/230, they have a different connector for OLD ART1 sensors!!!'''
 +
 +
*DTR controls engine and braking torque interface of ESP unit.
 +
*ESP/BAS -> DTR
 +
**Left front, right front, left rear, right rear wheel speeds
 +
**Steering angle (0 to 720 degrees)
 +
**Steering angle sign (right/left)
 +
*ESP/BAS <- DTR:
 +
**Distronic error
 +
**Target evaluation (distance to it, relative speed, angle, radar lobe orientation, strength of the reflected radar beams)
 +
*
 +
 +
N93 (Central Gateway control unit):
 +
 +
*Lower control panel (N72) -> CAN-B through N93 -> CAN-C DTR
 +
**DTR switch OFF or ON (proximity warning function)
 +
**Specification from the DTR distrance potentiometer
 +
 +
N80 (Steering column module):
 +
 +
*ESP/BAS <- Steering column module:
 +
**Pushbuttons OFF / SET MEMORY / SET ACCELERATION / SET DELAY
 +
**Variable speed limiter ON/OFF (except USA and Japan)
 +
**Cruise control switch implausible
 +
**Steering angle (from 0 to 720 degrees)
 +
**Steering angle sign (right/left)
 +
**Steering angle sensor defective
 +
 +
A1 (Instrument cluster)
 +
 +
*ESP/BAS <- Instrument cluster:
 +
**MPH instead of KMH (variable speed limitation)
 +
**Winter tire maximum speed
 +
*ESP/BAS -> Instrument cluster:
 +
**Distronic distance warning lamp
 +
**Distronic warning tone
 +
**Recognition of a stationary object (e.g. stationary vehicle)
 +
**Switch display to Distronic display
 +
**Distronic switched on (no vehicle ahead)
 +
**Speedometers
 +
**Switch Distronic segment display on
 +
**Vehicle detected ahead
 +
**Distronic switched on (Proximity control active)
 +
**LIMIT in display (except USA, Japan)
 +
**Distronic Error
 +
 +
TCU (Transmission control unit):
 +
 +
*BAS/ESP <- TCU
 +
**Actual gear
 +
**Target gear
 +
**Kick-down
 +
**Transmission code
 +
**Transmission emergency running mode
 +
*BAS/ESP -> TCU
 +
**Shift curve offset
 +
**Suppression of dynamic full load position
 +
**Maintain gear position
 +
**Active downshift required
 +
 +
ECU (PCM)
 +
 +
*BAS/ESP <- ECU
 +
**Vehicle code
 +
**Adjusted engine torque for traction control
 +
**Engine speed
 +
**Minimum and maximum engine torque, engine drag torque
 +
**Kickdown recognition
 +
**Deceleration fuel shutoff
 +
*BAS/ESP -> ECU
 +
**Reduction or increase of the engine nominal torque
 +
 +
<br />

Latest revision as of 15:42, 6 December 2022

Radar

Name: ART2 B (aka Distronic Plus), "ART210", DTR2

Mercedes part ID: A89 (A89b1 DTR Radar Sensor and A89n1 DTR Control Module integrated in single unit)

This device has only a single connector. This connector is close to VEMO V99-83-0013, but you have to cut the plastic to fit. On older models (ART1), a secondary unit is required and is has a coaxial cable running to it. The plug this coaxial cable is connected to, is used as a venting hole on ART2 / DTR2. Its a much more complex system, check W220 wiki for more information.

Connector 1:

  • A2105403681 "6-PIN MQS;B29"
  • Replacement/self built: VEMO V99-83-0013
  • Pinout:
    1. 0.5 RedGreen: Circuit 87 (POWER)
    2. Not Connected
    3. Not Connected
    4. 0.5 GreenWhite: CAN-C High
    5. 0.5 Green: CAN-C Low
    6. 0.75 Brown: GROUND

Fitment:

  • W219 (CLS)
  • W211 (E), mounted with reflector (might need reflector to work properly?)
  • W230 (SL)

P/N (PLEASE CHECK FOR MISSING COAXIAL PLUG, OTHERWISE ITS ART1):

P/N ART EPC Note
W219 CLS and W230 SL
A0005408817 1 W230 ONLY, until 28/05/2004
A2305400917 W219: until 31/10/2007, W230: from 30/07/2004, replaced by 1417
A2305401417 W219: until 31/10/2007, W230: from 30/07/2004, replaced by 1717
A2305401717 W219: until 31/10/2007, W230: from 30/07/2004, replaced by 1817
A2305401817 W219: until 31/10/2007, W230: from 30/07/2004
A2305400062 W219: 31/10/2007 and up, W230: from 30/07/2004, replaced by 0162
A2305400162 2 W219: 31/10/2007 and up, W230: from 30/07/2004
W211 E (Mounting with reflector)
A2115400617 1
A2115401417 2


Compatibility:

- R170 has no ZGW/CGW

- No mounting frame

- No K-Line, wire directly onto CAN

Fuse: 7.5A

CAN Opcodes
CAN ID Description
0x0254 A1 - Main status
0x025C A2 - Object 1 info
0x0260 A3 - Object 2 info
0x0264 A4 - Object 3 info
0x0268 A5 - Object 4 info

Distronic documentation on W220 wiki https://w220.wiki/Distronic

Initialization

Bootup phase is about 30 seconds. The device needs to detect some particular frame in order to not deem itself faulty.

Communication

N47-5 (ESP, BAS control unit):

Note: W209/215/220 have a different interface compared to W211/219/230, they have a different connector for OLD ART1 sensors!!!

  • DTR controls engine and braking torque interface of ESP unit.
  • ESP/BAS -> DTR
    • Left front, right front, left rear, right rear wheel speeds
    • Steering angle (0 to 720 degrees)
    • Steering angle sign (right/left)
  • ESP/BAS <- DTR:
    • Distronic error
    • Target evaluation (distance to it, relative speed, angle, radar lobe orientation, strength of the reflected radar beams)

N93 (Central Gateway control unit):

  • Lower control panel (N72) -> CAN-B through N93 -> CAN-C DTR
    • DTR switch OFF or ON (proximity warning function)
    • Specification from the DTR distrance potentiometer

N80 (Steering column module):

  • ESP/BAS <- Steering column module:
    • Pushbuttons OFF / SET MEMORY / SET ACCELERATION / SET DELAY
    • Variable speed limiter ON/OFF (except USA and Japan)
    • Cruise control switch implausible
    • Steering angle (from 0 to 720 degrees)
    • Steering angle sign (right/left)
    • Steering angle sensor defective

A1 (Instrument cluster)

  • ESP/BAS <- Instrument cluster:
    • MPH instead of KMH (variable speed limitation)
    • Winter tire maximum speed
  • ESP/BAS -> Instrument cluster:
    • Distronic distance warning lamp
    • Distronic warning tone
    • Recognition of a stationary object (e.g. stationary vehicle)
    • Switch display to Distronic display
    • Distronic switched on (no vehicle ahead)
    • Speedometers
    • Switch Distronic segment display on
    • Vehicle detected ahead
    • Distronic switched on (Proximity control active)
    • LIMIT in display (except USA, Japan)
    • Distronic Error

TCU (Transmission control unit):

  • BAS/ESP <- TCU
    • Actual gear
    • Target gear
    • Kick-down
    • Transmission code
    • Transmission emergency running mode
  • BAS/ESP -> TCU
    • Shift curve offset
    • Suppression of dynamic full load position
    • Maintain gear position
    • Active downshift required

ECU (PCM)

  • BAS/ESP <- ECU
    • Vehicle code
    • Adjusted engine torque for traction control
    • Engine speed
    • Minimum and maximum engine torque, engine drag torque
    • Kickdown recognition
    • Deceleration fuel shutoff
  • BAS/ESP -> ECU
    • Reduction or increase of the engine nominal torque


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