Mercedes-Benz ML320. Service manual - part 369

 

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Mercedes-Benz ML320. Service manual - part 369

 

 

GF54.30-P-3028GH

Displaying coolant level, function

28.6.99

MODEL 

163 as of 1.3.99

Function prerequisite
Engine: ON

Function
If the coolant level drops below the minimum mark the low ECL 
indicator lamp (A1p11) is illuminated.

To record the coolant level the instrument cluster (A1) is connected 
direct to the coolant level indicator electronic switch (S41) via two 
cables. The coolant level indicator electronic switch (S41) 
consists of two electrodes.
D

If the level is correct both electrodes are immersed in the 
coolant. The coolant serves as a dielectric between the 
electrodes.

D

If the coolant level is below the minimum mark the electrodes of 
the sensor are no longer immersed in the coolant. There is only 
air between the electrodes as a dielectric.

Evaluation

The instrument cluster (A1) sends test pulses to the sensor for 
a period of one millisecond. These pulses are deformed 
differently depending on the dielectric (air or coolant).
The instrument cluster (A1) evaluates the pulse shape and, if 
the coolant level is below the minimum (electrodes are 
completely in air), actuates the low ECL indicator lamp (A1p11) 
after a delay of approx. 60 seconds.

The delay serves to prevent the indicator lamp flickering due to 
the coolant moving from side to side on corners or off-road. 

Diagnosis
Diagnosis is carried out, as described in the Diagnosis Manual, via 
the simulation of the coolant level indicator electronic switch (S41)
by a resistance. 

Coolant level switch, 
location/task/design/function

GF54.30-P-4103GH

Copyright DaimlerChrysler AG  04.06.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorded by Modification services.

Page 1

GF00.20-P-2010B

Displaying service, function

25.3.99

MODEL 

129 as of 1.8.99

MODEL 

163 as of 1.1.00

MODEL 

168 as of 1.9.99

MODEL 

170 as of 1.12.99

MODEL 

202 as of 1.8.99

Display of service to be performed
In addition to the various service displays, the service work to be 
performed (A or B) also appears.
The service symbol (wrench) appears once or twice in the display for 
this purpose.

The service symbol appears

D

once for service A

D

twice for service B.

A service A is always followed by a service B. 
Following a service B, the next service must be calculated 
taking into account the kilometer readings. If the distance of the 
current service interval is less than 22 000 km, the next service 
is service A, otherwise service B.
This calculation is now performed automatically in the 
instrument cluster (A1).
The path of the service displayed A or B can be processed in 
the service sheet without the need for a calculation.

There is no external difference in the instrument clusters with 
and without the service display.
If service A (one service symbol) is displayed, it is then 
necessary to ensure by means of the production date or the 
control unit identifier, that the vehicle in question is in fact a 
vehicle with service display. If this is not the case, the service 
must be determined as specified in the service sheet.

The table below shows from which control unit identifier the 
instrument cluster features the service display:

The control unit identifier can be read with the HHT under menu point 
"Control unit version".

Model

Control unit identifier

129

2/04

163

3/04

168

3/20

170

2/23

202

0/20

Displaying remaining service function

GF00.20-P-2007A

Copyright DaimlerChrysler AG  05.06.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorded by Modification services.

Page 1

AR82.20-P-0110GH

Removing and installing front dome lamp

13.3.97

MODEL 

163

P82.20-0400-11

1

Overhead control panel

2

Bulb 

3

Socket 

4

Dome lamp switch 

5

Screws 

6

Reflector housing 

  

Removal, installation

1

Remove overhead control panel (1) 

AR82.20-P-1100GH

2

Remove bulb (2) 

3

Release socket (3) for bulb (2) by pressing in 

 The bulb socket is clipped to the overhead 

control panel.

4

Pull dome lamp switch (4) off of reflector 
housing (6) 

5

Unscrew screws (5) from reflector housing (6) 
on left and right on overhead control panel (1) 

6

Pry reflector housing (6) out of overhead 
control panel (1) 

 

Avoid damaging reflector housing 

7

Reinstall in opposite order

Copyright DaimlerChrysler AG  09.05.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorded by Modification services.

Page 1

AR72.10-P-2100GH

Remove/install door catch

11.2.97

MODEL 

163.113 /128 /136 /154 /157 /172 /174 /175

P72.10-0483-01

1

Bolt

2

Mount for seal

3

Seal

4

Bracket

5

Door retaining strap

6

Nut

P72.10-0484-01

  

Removing, installing

1

Remove door lining

Front door

AR72.10-P-1000GH

Rear door

AR72.12-P-1010GH

2

Pull foil off of inner door panel in front area

 Installation:   Replace damaged foil.

3

Unscrew screw (1) on door retraining strap

 

Avoid damaging paint.

Installation: Apply glue to screw.

*BR00.45-Z-1013-02A

 

*BA72.10-P-1001-01D

 

*BA72.12-P-1003-01C

4.1

Pull seal (3) off of door retaining strap (5)

Up to 08/99.

5

Close crank window

6

Unscrew nuts (6) from door retaining strap

 

 Hold door retaining strap to prevent it 

from falling into the door

 

*BA72.10-P-1002-01D

7

Remove door retaining strap through 
installation opening in inner door panel

  Pull rubber out of retaining clip at bottom 

of window guide rail and move along door 
catch.

Installation: Install window guide rail 

correctly.

8

Install in the reverse order

 

Front door

Number

Designation

MODEL 
Series 163

BA72.10-P-1001-01D

Bolt, door catch at A-pillar

Nm

24

BA72.10-P-1002-01D

Nut for door restraining strap on 
inside of door

Nm

10

 

Rear door

Number

Designation

MODEL 
Series 163

BA72.12-P-1003-01C

Screw for door catch on B-pillar

Nm

24

Auxiliary repair materials

Number

Designation

Order number

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