1997 MERCEDES-BENZ ML430 coolant temperature

Fig. 164: Identifying Evaporator Housing Components (2 Of 2)

Remove/install

Risk of explosion from welding or
soldering work on closed air
conditioning system. Risk of
poisoning. Inhaling overheated
refrigerant vapors may be toxic.
Risk of injury from skin and eye
contact with liquid refrigerant.Do not carry out any welding work on the
closed air conditioning system or in the
surrounding area. No smoking or open
flames. Wear eye protection and
protective gloves. Work only in well
ventilated areas. Carry out repair work on
the air conditioning system circuit only
after the system has been discharged.
AS83.00-Z-
0001-01A
Procedures if air conditioning
system is damaged or leakingAll models
AH83.30-
N-0004-
01A

Protect air conditioning circuit and
components from moisture when
carrying out repair work
All models fitted with air conditioning
AH83.30-
N-0005-
01A
Notes on handling refrigerant
R134aAll models fitted with air conditioning
AH83.30-
N-0003-
01A
Risk of injury to skin and eyes
suffering scalding from contact
with hot coolant spray. Risk of
Do not open cooling system unless
coolant temperature is below 90°C. Open
cap slowly and release the pressure. Do
not pour coolant into beverage bottles.
AS20.00-Z-
0001-01A

2001 Mercedes-Benz ML320
1998-2005 HVAC Climate Control - 163 Chassis
me
Saturday, October 02, 2010 3:23:18 PMPage 196 © 2006 Mitchell Repair Information Company, LLC.

Remove/install

Risk of injury to skin and eyes
suffering scalding from contact with
hot coolant spray. Risk of poisoning
from swallowing coolant.
Do not open cooling system unless coolant
temperature is below 90°C. Open cap slowly
and release the pressure. Do not pour
coolant into beverage bottles.
Wear protective gloves, protective clothing
and eye protection.
AS20.00-Z-
0001-01A

Risk of explosion from welding or
soldering work on closed air
conditioning system. Risk of
poisoning. Inhaling overheated
refrigerant vapors may be toxic. Risk
of injury from skin and eye contact
with liquid refrigerant.Do not carry out any welding work on the
closed air conditioning system or in the
surrounding area. No smoking or open
flames. Wear eye protection and protective
gloves. Work only in well ventilated areas.
Carry out repair work on the air
conditioning system circuit only after the
system has been discharged.
AS83.00-Z-
0001-01A
Procedures if air conditioning system
is damaged or leakingAll models
AH83.30-
N-0004-
01A

Protect air conditioning circuit and
components from moisture when
carrying out repair work
All models fitted with air conditioning
AH83.30-
N-0005-
01A
Notes on handling refrigerant R134aAll models fitted with air conditioning
AH83.30-
N-0003-
01A
1Drain coolant J Engine 112, 113.AR20.00-P-
1142HA
Engine 111.AR20.00-P-
1142HG
Engine 612.963.AR20.00-P-
1142M
2Unscrew coolant compensating
reservoir (1) on firewall Lay compensating reservoir to one side.
3Disconnect coolant delivery/return
hoses for heat exchanger (2) Remove hose clamps from coolant hoses.
4Discharge air conditioning system
Installation: Evacuate air conditioning,
refill and check for proper operation and
leaktightness.AR83.30-P-
1760GH
5Remove cover on expansion valve
(4)
6Remove nut (3) on expansion valve
(4) Replace self-locking nut.
*BA83.30-
P-1003-01B
7Disconnect refrigerant lines from
expansion valve Installation: Install new sealing rings
and moisten with compressor oil.

2001 Mercedes-Benz ML320
1998-2005 HVAC Climate Control - 163 Chassis
me
Saturday, October 02, 2010 3:23:19 PMPage 220 © 2006 Mitchell Repair Information Company, LLC.

GF54.30-P-2001A
Indicator / warning displays, function
24.10.96

MODEL
129, 140 as of 1.6.96,

163, 168, 170,

202 as of 1.8.96,

208 up to 31.7.99,

210 as of 1.6.96 up to 30.6.99

The table below lists the various warning alarms and indications

according to type (visual/acoustic) and their actuation (direct/CAN).

Visual warning and indicator signals actuated over direct lines:
D
Left turn signal indicator lamp (A1e1)

D
Right turn signal indicator lamp (A1e2)

D
High beam indicator lamp (A1e3)

D
Fuel reserve warning lamp (A1e4)

D
Brake fluid / parking brake warning lamp (A1e7) (except model

163)

D
Low windshield washer fluid level warning lamp (A1e13) (as of

01.09.01 also valid for model 163)

D
Low engine coolant level warning lamp (A1e11) (except model

168, model 163 as of 3.99)

D
Coolant level and temperature warning lamp (A1e11) (only model

168 as of 9.99 and only coolant level function)

D
Generator charge indicator/warning lamp (A1e5)

D
Seat belt warning lamp (A1e9)

D
Seatbelt/backrest lock warning lamp (A1e9)

D
Exterior lamp failure indicator lamp (A1e14)

-----------------------------------------------------------------------------------------
D

Hydraulic fluid level warning lamp (A1e37)

D
ADS warning lamp, suspension (A1e27)

D
Steering lock warning lamp (A1e40) (only

I
)

D
SRS airbag malfunction indicator lamp (A1e15)

D
AIRBAG OFF indicator lamp (A1e56), only model 163 except

I

Also refer to document: Indicator and warning signals triggered

over CAN data lines
Acoustic warning and indicator signals actuated over direct

lines:
D
Turn signal ticker

D
Seat belt reminder

D
Switched-on lights reminder

D
Key warning

D
Soft top warning, only model 170


Also refer to document: Acoustic warnings, function

Acoustic warning and indicator signals actuated over CAN data

lines:
D
Parking brake warning

D
Vehicle speed warning

D
Vehicle speed limit warning

D
Gear warning, only model 168


Also refer to document: Acoustic warnings, function

Indicator and warning signals triggered over

direct lines

GF54.30-P-3002A

Indicator and warning signals triggered over

CAN data lines

GF54.30-P-3003A
Acoustic warnings, function
GF54.30-P-3010A

Copyright DaimlerChrysler AG 04.06.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorde
d by Modification services.
Page 1

GF54.30-P-2001A
Indicator / warning displays, function
24.10.96

MODEL
129, 140 as of 1.6.96,

163, 168, 170,

202 as of 1.8.96,

208 up to 31.7.99,

210 as of 1.6.96 up to 30.6.99

The table below lists the various warning alarms and indications

according to type (visual/acoustic) and their actuation (direct/CAN).

Visual warning and indicator signals actuated over direct lines:
D
Left turn signal indicator lamp (A1e1)

D
Right turn signal indicator lamp (A1e2)

D
High beam indicator lamp (A1e3)

D
Fuel reserve warning lamp (A1e4)

D
Brake fluid / parking brake warning lamp (A1e7) (except model

163)

D
Low windshield washer fluid level warning lamp (A1e13) (as of

01.09.01 also valid for model 163)

D
Low engine coolant level warning lamp (A1e11) (except model

168, model 163 as of 3.99)

D
Coolant level and temperature warning lamp (A1e11) (only model

168 as of 9.99 and only coolant level function)

D
Generator charge indicator/warning lamp (A1e5)

D
Seat belt warning lamp (A1e9)

D
Seatbelt/backrest lock warning lamp (A1e9)

D
Exterior lamp failure indicator lamp (A1e14)

-----------------------------------------------------------------------------------------
D

Hydraulic fluid level warning lamp (A1e37)

D
ADS warning lamp, suspension (A1e27)

D
Steering lock warning lamp (A1e40) (only

I
)

D
SRS airbag malfunction indicator lamp (A1e15)

D
AIRBAG OFF indicator lamp (A1e56), only model 163 except

I

Also refer to document: Indicator and warning signals triggered

over CAN data lines
Acoustic warning and indicator signals actuated over direct

lines:
D
Turn signal ticker

D
Seat belt reminder

D
Switched-on lights reminder

D
Key warning

D
Soft top warning, only model 170


Also refer to document: Acoustic warnings, function

Acoustic warning and indicator signals actuated over CAN data

lines:
D
Parking brake warning

D
Vehicle speed warning

D
Vehicle speed limit warning

D
Gear warning, only model 168


Also refer to document: Acoustic warnings, function

Indicator and warning signals triggered over

direct lines

GF54.30-P-3002A

Indicator and warning signals triggered over

CAN data lines

GF54.30-P-3003A
Acoustic warnings, function
GF54.30-P-3010A

Copyright DaimlerChrysler AG 05.06.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorde
d by Modification services.
Page 1

GF54.30-P-3003A
Indicator/warning messages triggered via CAN data buses, function
24.10.96

MODEL
129, 140 as of 1.6.96,

163, 168, 170,

202 as of 1.8.96,

208 up to 31.7.99,

210 as of 1.6.96 up to 30.6.99

Indicator and warning displays triggered via CAN

Low brake fluid level/parking brake indicator lamp (A1e7)
The parking brake signal comes from the traction system

control module.

The brake fluid signal comes directly from the switch (S11)

(except model 163).

Brake pad wear indicator lamp (A1e6)

The parking brake signal comes from the traction system

control module (N47)

Low engine oil level indicator lamp (A1e12)

The oil level signal comes from the injection system control

module (N3).

For vehicles with ASSYST, also refer to document: ASSYST

engine oil monitoring.

Preglow indicator lamp (A1e16)

The signal comes directly from the injection system control

module (N3).

Coolant level and temperature warning lamp (A1e11) model 168

only as of 9.99
The coolant temperature signal comes from the injection

system control module (N3)

-----------------------------------------------------------------------------------------
ABS MIL (A1e17)

The parking brake signal comes from the traction system

control module (N47).

"CHECK ENGINE" MIL (A1e26),


I
only

The signal comes from the injection system control module (N3)

ETS (A1e35) or ASR (A1e22) or ESP (A1e42) MIL
Lamp illuminated if there is a fault in the respective system.

The signal comes from the traction system control module

(N47).

ETS (A1e36) or ASR (A1e21) or ESP (A1e41) warning lamp
The lamp indicates that the respective system is active.

The signal comes from the traction system control module

(N47).

-----------------------------------------------------------------------------------------

Severe leak warning (

I
as of 97 only)

The fuel reserve indicator lamp (A1e4) flashes. The signal

comes from the injection system control module (N3).

The warning takes place at the earliest 30 minutes after cold

start with the engine idling and the vehicle stationary.

Also refer to document: Purge system with leak test, function
Fog lamps indicator lamp (A1e57), model 163 only except
I
)

The signal comes from the All-activity module (AAM, N10)

"LOW RANGE" indicator lamp (A1e53), model 163 only
The signal comes from the transfer case control module (N78)

Active service system (ASSYST)
Engines 112, 113, 611 (engines with oil

sensor)

GF00.20-P-2009A

Engine oil monitoring, function
Model 210 as of 01.03.97 with engine M111,

OM602, OM604, OM605 and OM606

As of 06.97 models 129, 140, 170, 202 except

engines 112, 113, 611

(Valid for engines with low oil level switch).
GF00.20-P-2009B

Displaying coolant temperature, function
Model 168 as of 9.99

GF54.30-P-3020GC

Purge system with leak test, function

GF47.30-P-3016L

Bus systems, overall function

GF54.00-P-0004A

Copyright DaimlerChrysler AG 04.06.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorde
d by Modification services.
Page 1

GF54.30-P-3002A
Indicator and warning signals triggered over direct lines, function
24.10.96

MODEL
129, 140 as of 1.6.96,

163, 168, 170,

202 as of 1.8.96,

208 up to 31.7.99,

210 as of 1.6.96 up to 30.6.99

Indicator and warning signals

Indicator lamps for left turn signal (A1e1) and right turn signal

(A1e2)
The signal in models 129, 140, 170, 202 comes from the

combination relay (turn signals with trailer coupling, rear

window defroster, wiper motor, anti-theft alarm system)

(N10/2), and in model 210 from the multifunction control

module (N10-1) or the driver's side signal acquisition and

actuation module (SAM) (N10/1).

In model 168 the entire turn signal control is located in the

instrument cluster (A1).

Brake fluid / parking brake warning lamp (A1e7)

The signal for the brake fluid comes direct from the brake fluid level switch (S11) (except model 163).

(The signal for the parking brake comes over CAN.)

Low windshield washer fluid level warning lamp (A1e13) except

models 163 and 168
See

document: Coolant/washer fluid level voltage coding, task /

function

-----------------------------------------------------------------------------------------
Low windshield washer fluid level warning lamp (A1e13) as of

01.09.01 for model 163
See document: Displaying washer fluid level, function

Low engine coolant level warning lamp (A1e11) except models

163 and 168
See

document: Coolant/washer fluid level voltage coding, task /

function

Low engine coolant level warning lamp (A1e11) model 163 as of

3.99
See

document: Displaying coolant level, function

Coolant level and temperature warning lamp (A1e11) model 168

as of 9.99
See

document: Displaying coolant level, function

Fuel reserve warning lamp (A1e4)
When the reserve fuel level is reached, this lamp lights up and

goes out again only after refueling is detected. If the vehicle is

refueled with the ignition ON, refueling is detected only if at

least 7 liters of fuel are added.

-----------------------------------------------------------------------------------------

AIRBAG OFF indicator lamp (A1e56), only model 163 except

I

The signal comes from the emergency tensioning retractor

(ETR) control module with airbag (AB, N2/2)

Generator charge indicator/warning lamp (A1e5)

See document: Terminal 61 and terminal 61e, charge indicator

lamp, exterior lamp failure, function

Seatbelt/backrest lock warning lamp (A1e9)

The seat belt warning lamp is only used in a few national

versions, and is actuated direct by a seat belt buckle switch
(normally closed contact). After engine start, the lamp flashes

for a short time (approx. 6 seconds).

In model 129 if this lamp fails to go out after flashing briefly, but

continues to shine constantly, then the seat backrest is not

locked.
Exterior lamp failure indicator lamp (A1e14)

The signal comes from the lamp failure monitor

See document: Terminal 61 and terminal 61e, charge indicator

lamp, exterior lamp failure, function
Hydraulic fluid level warning lamp (A1e37)
The signal comes direct from the ADS level control oil level

switch (S44).

ADS warning lamp, suspension (A1e27) The signal comes from the ADS control module, suspension
(N51).

SRS airbag malfunction indicator lamp (A1e15)
The signal comes from the emergency tensioning retractor

(ETR) control module with airbag (AB, N2/2)

Voltage coding of coolant / windshield washer

fluid level, function
Except models 163 and 168

GF54.30-P-3006A

Displaying coolant level, function
Model 163 as of 3.99

GF54.30-P-3028GH

Model 168 as of 9.99

GF54.30-P-3028GC

Terminal 61 and terminal 61e, charge

indicator lamp, exterior lamp failure, function

GF54.30-P-3007A

Copyright DaimlerChrysler AG 04.06.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorde
d by Modification services.
Page 1

GF54.30-P-4104A
Outside temperature display, location/function
8.7.99

MODEL
129

MODEL
140 as of 1.6.96

MODEL
170

MODEL
163, 202 with CODE (240a) Outside temperature display

MODEL
202 as of 1.8.96

MODEL
168

MODEL
208 up to 31.7.99,

210 as of 1.6.96 up to 30.6.99

To display the temperature, the
outside temperature indicator

A1p4
requires:

D
the outside temperature

D
the speed signal

D
the engine running time

and
D
the coolant temperature (model 129, and model 140 as of
1.6.96, model 170, model 202 as of 08/96 and model 163,

model 168, model 210)

The outside temperature is determined by the outside temperature

indicator temperature sensor B14. The temperature sensor is

installed at the front left of the vehicle under the bumper and

connected to the instrument cluster A1 via the 21 or 25-pin

connector, coding part A terminal 1 and 2.

The speed signal, engine running time and engine temperature are

determined internally by the instrument cluster A1.

Since the outside temperature display depends on the speed, engine

running time and coolant temperature, high temperatures (influenced

by the heat generated by the engine, for example) are not displayed

when the vehicle is stationary or moving slowly.
Function, model 202 until 08/95

When the ignition is switched on and off and at speeds below approx.

20 km/h, the last temperature measured is stored and displayed.

If the measured outside temperature drops below the stored value,

the current measured temperature is displayed.

If the outside temperature rises above the stored value, the current

measured outside temperature is displayed only after the following

delays:

D
When the engine is not running, the current outside

temperature is only displayed after 6 times the engine running

time. For example, if the preceding running time was 5 minutes,

the current temperature is not displayed until after 30 minutes.
The maximum delay, however, is 1 hour.

Up to 09.94

D
At vehicle speeds between 20-60 km/h, outside temperatures

are displayed after a delay of approx. 5 min.

D
At vehicle speeds over 60 km/h, outside temperatures are

displayed after a delay of approx. 2 minutes.

As of 09.94

D
At vehicle speeds between 20-45 km/h, outside temperatures

are displayed after a delay of approx. 3 min.

D
At vehicle speeds over 45 km/h, outside temperatures are

displayed after a delay of approx. 1.5 min.

Function

Model 129, model 140 as of 1.6.96, model 170, model 202 as of

08/96, model 163, model 168, model 208 and model 210

D
When the ignition is turned on or off

and with an engine temperature < 60°C

the current temperature is always stored and displayed.

D
When the ignition is turned off

and with an engine temperature < 60°C

the temperature last measured is stored and displayed.

D
When the ignition is turned on

and when an engine temperature < 60(C

The stored temperature is displayed.
If the measured outside temperature drops below the stored value,

the current measured temperature is displayed.

If the outside temperature rises above the stored value, the current

measured outside temperature is displayed only after the following

delays:

D
When the engine is not running, the current outside

temperature is only displayed after 6 times the engine running

time. For example, if the preceding running time was 5 minutes,

the current temperature is not displayed until after 30 minutes.
The maximum delay, however, is 1 hour.

D
At vehicle speeds between 20-45 km/h, outside temperatures

are displayed after a delay of approx. 3 minutes.

D
At vehicle speeds above 45 km/h, outside temperatures are

displayed after a delay of approx. 1.5 minutes.

Copyright DaimlerChrysler AG 05.06.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorde
d by Modification services.
Page 1

AR20.20-P-3865HC
Remove/install the radiator
5.6.97

ENGINE
112.942 in MODEL 163.154

ENGINE
112.970 in MODEL 163.157

ENGINE
113.942 in MODEL 163.172

ENGINE
113.965 in MODEL 163.175

ENGINE
113.981 in MODEL 163.174

P20.20-2017-09

Shown on Model 163.154 with Engine 112

1
Viscous fan

2
Plate clamps of fan shroud

3
Fan shroud

4
Coolant line

5
Coolant line to expansion reservoir

6
Coolant line

7
Headlamps
17

Air deflector plate

18
Oil line (return line radiator

!
expansion

reservoir of power steering pump)

19
Oil line (feed line steering gear

!

radiator)

20
Fasteners

21
Damper rubber

8

Radiator crossmember

9
Rubber seal of radiator

10
ATF lines

11
Fan grille

12
Air guides

13
Clamps of air guides

14
Air conditioning system fluid reservoir

15
Radiator

16
Cover strips

Modification notes
23.3.00

Radiator with integral oil cooler for power steering pump
See step 5 and 16


Remove/install


External torx set

*001589760900


6 mm hexagon socket

*WH58.30-Z-1001-06A

7 mm hexagon socket

*WH58.30-Z-1002-06A

1.1
Remove air deflector plate (17)

Engine 113.942 only.

Danger!

Risk of injury
to skin and eyes from scalding

due to contact with hot coolant spray.
Risk of

poisoning
if coolant is swallowed.
Do not open cooling system unless coolant

temperature is below 90 °C. Open cap slowly

and release the pressure. Do not pour coolant

into beverage bottles.

Wear protective gloves, protective clothing

and eye protection.
AS20.00-Z-0001-01A

2
Drain the coolant at the radiator


To drain the coolant, detach coolant line

at the bottom of the radiator or at the coolant

pump.


Installation:
Replace the hose clamps on

the radiator fitting for the coolant hose, as

they could cause damage to the screw/thread. AR20.00-P-1142HA

Hose clamp

*BA20.20-P-1004-01A

Copyright DaimlerChrysler AG 12.05.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorde

d by Modification services.
Page 1