Mercedes-Benz ML320. Manual - part 708

Fig. 176: Identifying Coolant Compensating Reservoir 

Fig. 177: Identifying Outside Air Temperature Sensor And Connector 

 

2001 Mercedes-Benz ML320 

1998-2005 HVAC Climate Control - 163 Chassis

  

me 

 

 

 

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 leaking

All 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 R134a All models fitted with air conditioning

AH83.30-
N-0003-
01A

1

Drain coolant

 J Engine 112, 113.

AR20.00-P-
1142HA 

 

 

 Engine 111.

AR20.00-P-
1142HG

 

 

 Engine 612.963.

AR20.00-P-
1142M

2

Unscrew coolant compensating 
reservoir (1) on firewall

 Lay compensating reservoir to one side.

 

3

Disconnect coolant delivery/return 
hoses for heat exchanger (2)

 Remove hose clamps from coolant hoses.  

4

Discharge air conditioning system

 Installation: Evacuate air conditioning, 

refill and check for proper operation and 
leaktightness.

AR83.30-P-
1760GH

5

Remove cover on expansion valve 
(4)

 

 

6

Remove nut (3) on expansion valve 
(4)

 Replace self-locking nut. 
 

*BA83.30-
P-1003-01B

7

Disconnect 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 

 

 Dashboard 

 Air conditioning system 

8

Remove wiper system

 

AR82.30-P-
6400GH 

9

Remove nuts (5) from instrument 
panel at firewall

 

*BA68.10-
P-1001-
01A

10

Remove paneling from A-pillar

 

AR68.30-P-
4050GH 

11

Remove plastic nuts on driver's side 
at paneling below instrument panel

 

 

12

Remove paneling on right in footwell  

AR68.30-P-
4010GH 

13

Remove rubber covers on side at the 
A-pillars and unscrew screws for 
instrument panel at A-pillar (arrows)

 

*BA68.10-
P-1002-
01A

14

Remove center console

 

AR68.20-P-
2000GH 

15

Unscrew bolt (6) underneath the 
instrument panel

 

*BA68.10-
P-1003-
01A

16

Withdraw instrument panel to the 
rear

 Bring in helper. Cushion front edge of 

selector lever module so that lower edge of 
instrument panel is not damaged.

 

17

Turn instrument panel around so that 
the back is accessible

 Do not overstretch interior wiring 

harness.

 

18

Detach outside temperature sensor 
connector (B10/5x1)

 

 

19

Disconnect cable from temperature 
sensor to evaporator housing

 Installation: Ensure clean cable routing.  

20

Remove outside temperature sensor 
(B10/5) from air duct

 2 bolts.

 

21

Install in the reverse order

 

 

22

Inspect cooling system for leaks

 

AR20.00-P-
1010HA 

Number

Designation

Model Series 163

BA68.10-P-1001-01A

Nut, dashboard to firewall

NM 8

BA68.10-P-1002-01A

Bolt, dashboard to A-pillar

NM 19

BA68.10-P-1003-01A

Bolt, dashboard to transmission tunnel

NM 30

Number

Designation

Model Series 163

BA83.30-P-1003-01B

Nut to pipeline on expansion valve

NM 10

 

2001 Mercedes-Benz ML320 

1998-2005 HVAC Climate Control - 163 Chassis

  

me 

 

REMOVE/INSTALL AIR OUTLET TEMPERATURE SENSOR - AR83.30-P-8087GH

MODEL 163.113 #A as of 289565, 163.154 #A as of 289620, 163.174 #A as of 289565, 163.113 #X as of 
754620, 163.128/157/175  

Instrument panel center nozzles  

Fig. 178: Identifying Center Nozzle Air Stream Temperature Sensor 

REMOVE/INSTALL AIR OUTLET TEMPERATURE SENSOR - AR83.30-P-8087GI

1.1 Remove glove compartment

 Only required on left hand drive vehicles.

AR68.10-P-
1400GI 

1.2 Remove instrument cluster

 Only required for right-hand steering.

AR54.30-P-
6015GH 

2

Remove center air nozzles

 

AR68.10-P-
1150GH 

3

Remove center nozzle air 
stream temperature sensor
(B10/24)

 Do not damage center nozzle air stream temperature 

sensor (B10/24) in order to avoid malfunctions. 

 The center nozzle air stream temperature sensor 

(B10/24) is positioned on the right side above the air 
nozzles on the instrument panel. 

 Turn the center nozzle air stream temperature 

sensors (B10/24) 90° counterclockwise.

 

4

Disconnect center nozzle air 
stream temperature sensor plug 
(B10/24)

 

 

5

Install in the reverse order

 

 

 

2001 Mercedes-Benz ML320 

1998-2005 HVAC Climate Control - 163 Chassis

  

me