warning lights MERCEDES-BENZ ML320 1997 Complete Repair Manual

check to ensure system is functioning properly. See SYSTEM OPERATION CHECK .
Removal & Installation (SLK 230)
1. Before proceeding, see SERVICE PRECAUTIONS . Disable air bag system. See DISABLING &
ACTIVATING AIR BAG SYSTEM . Remove ignition key. Remove top section of instrument panel.
Fold vapor barrier toward front to reveal 2 screws. Disconnect passenger-side air bag module connector.
Remove 4 screws and passenger-side air bag module.
2. To install air bag module, reverse removal procedure. Activate air bag system. Perform system operation
check to ensure system is functioning properly. See SYSTEM OPERATION CHECK
.
SYSTEM OPERATION CHECK
SRS warning light indicates air bag and Emergency Tensioning Retractor (ETR) system readiness. Turn
ignition on. SRS warning light will light, and then go out after approximately 4 seconds indicating system is
functioning properly. If SRS warning light does not light, lights up while driving or lights all the time, there is a
system fault. Repair malfunctioning system. See DIAGNOSIS & TESTING
.
SERVICE PRECAUTIONS
Observe following precautions when working with air bag systems:
When working around steering column components and before any repairs are performed, disable air bag
system. See DISABLING & ACTIVATING AIR BAG SYSTEM
.
Before straightening any damage to body, or before performing electrical arc-welding, disable air bag
system. See DISABLING & ACTIVATING AIR BAG SYSTEM
.
Always wear safety glasses and gloves when handling a deployed air bag module. Air bag module may
contain sodium hydroxide deposits which are irritating to the skin.
DO NOT repair any portion of SRS wiring harness.
Always handle air bag module with trim cover away from your body. Always place air bag module on
workbench with trim cover up, away from loose objects.
DO NOT expose any SRS component to temperatures in excess of 212°F (100°C).
DO NOT expose any SRS component to cleaning agents such as solvents, gasoline, lye, etc.
DO NOT connect Hand-Held Tester (6511 0001 99) to Data Link Connector (DLC) with ignition on.
Damage to HHT may result.
DO NOT connect HHT (6511 0001 99) to vehicle if a battery charger is connected to vehicle battery.
Damage to HHT may result.
DISABLING & ACTIVATING AIR BAG SYSTEM DISABLING SYSTEM
Before proceeding, follow air bag service precautions. See SERVICE PRECAUTIONS
. Turn ignition off.
Disconnect and shield negative battery cable. Remove passenger foot mat. Remove passenger footrest.
Disconnect SRS system connector (X29/9) located at passenger footwell area. See Fig. 5
. System is now
disabled.

1998 Mercedes-Benz ML320
AIR BAG RESTRAINT SYSTEM 1998 AIR BAG RESTRAINT SYSTEMS Mercedes-Benz
me
Saturday, October 02, 2010 3:33:14 PMPage 14 © 2006 Mitchell Repair Information Company, LLC.

33 Central locking system
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Notes:
If doors are unlocked with the central locking switch
after activating the automatic central locking, and
neither door is opened, then the doors remain unlocked
even at vehicle speeds of approximately 9 mph
(15 km / h) or more.
If a door is opened from the inside at speeds of
approximately 9mph (15km/h) or less with the
automatic central locking activated, the door will again
be automatically locked at speeds of approximately
9 mph (15 km / h) or more.
Important!
When towing the vehicle, or with the vehicle on a
dynamometer test stand, please, note the following:
With the engine running, the vehicle doors will lock if
the left front wheel spins at vehicle speeds of
approximately 9 mph (15 km / h) or more.
To prevent vehicle door locks from locking, deactivate
the automatic central locking.Emergency unlocking in case of accident
The doors unlock automatically a short time after an
accident in which an airbag or emergency tensioning
retractor deploys (this is intended to aid rescue and
exit). However, the key must still be in the steering lock
position 1 or 2.
Additionally the hazard warning flashers turn on
automatically and the interior lights switch on for
approximately 30 minutes.

221 Malfunction and indicator lamps
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index Electronic stability program (ESP)/Electronic
traction system (4-ETS+) — warning lamp
The yellow warning lamp in the
speedometer dial comes on with the key in
steering lock position 2. It should go out
with engine running.
See page 203 for 4-ETS+ and page 205 for ESP if the
warning lamp lights up or flashes when the vehicle is
moving.
BAS/ESP malfunction indicator lamp
The malfunction indicator lamp for the ESP
is combined with that of the BAS.
The yellow BAS / ESP malfunction indicator
lamp in the instrument cluster comes on with the key in
steering lock position 2. It should go out with the engine
running.
If the BAS / ESP malfunction indicator lamp remains
illuminated with the engine running, see page 199 for
BAS and page 205 for ESP.4-ETS+ malfunction indicator lamp
The yellow ETS malfunction indicator lamp
in the instrument cluster comes on with the
key in steering lock position 2. It should go
out with the engine running.
If the ETS malfunction indicator lamp remains
illuminated with the engine running a malfunction has
been detected, see page 203 for 4-ETS+.
LOW RANGE indicator lamp
The yellow LOW RANGE indicator lamp in
the instrument cluster comes on with the
key in steering lock position 2. With the
LOW RANGE mode deactivated it should go out with the
engine running.
With the LOW RANGE mode activated the LOW RANGE
indicator lamp is illuminated continuously.
If the indicator lamp blinks fast, one or more switching
conditions were not observed, or the LOW RANGE mode
is defective, see page 209 for LOW RANGE mode.
BAS
ESP
ETSLOW
RANGE

254 Jump starting
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Proceed as follows:
1. Position the vehicle with the charged battery so that
the jumper cables will reach, but never let the
vehicles touch. Make sure the jumper cables do not
have loose or missing insulation.
2. On both vehicles:
•Turn off engine and all lights and accessories,
except hazard warning flashers or work lights.
•Apply parking brake and shift selector lever to
position “P”.
Important!
3. Clamp one end of the first jumper cable to the
positive (+) under hood terminal of the discharged
battery and the other end to the positive (+) terminal
of the charged battery. Make sure the cable clamps
do not touch any other metal parts.
4. Clamp one end of the second jumper cable to the
grounded negative (–) terminal of the charged
battery and the final connection to the negative (–)
terminal of the discharged battery.Important!
5. Start engine of the vehicle with the charged battery
and run at high idle. Make sure the cables are not
on or near pulleys, fans, or other parts that move
when the engine is started. Allow the discharged
battery to charge for a few minutes. Start engine of
the disabled vehicle in the usual manner.
6. After the engine has started, remove jumper cables
by exactly reversing the above installation
sequence, starting with the last connection made
first. When removing each clamp, make sure that it
does not touch any other metal while the other end
is still attached.
Notes:
If engine does not run after several unsuccessful
starting attempts, have it checked at the nearest
authorized Mercedes-Benz Light Truck Center.
Excessive unburned fuel may damage the catalytic
converter.

33
Central locking system
Te ch n ica l
data
Instruments
and controls Operation
Driving Instrument
cluster display Practical hints Car care Index
Notes:
If doors are unlocked with the central locking switch
after activating the automatic central locking, and
neither door is opened, then the doors remain unlocked
even at vehicle speeds of approximately 9 mph
(15 km / h) or more.
If a door is opened from the inside at speeds of
approximately 9mph (15km/h) or less with the
automatic central locking activated, the door will again
be automatically locked at speeds of approximately
9 mph (15 km / h) or more.
Important!
When towing the vehicle, or with the vehicle on a
dynamometer test stand, please, note the following:
With the engine running, the vehicle doors will lock if
the left front wheel spins at vehicle speeds of
approximately 9 mph (15 km / h) or more.
To prevent vehicle door locks from locking, deactivate
the automatic central locking. Emergency unlocking in case of accident
The doors unlock automatically a short time after an
accident in which an airbag or emergency tensioning
retractor deploys (this is intended to aid rescue and
exit). However, the key must still be in the steering lock
position 1 or 2.
Additionally the hazard warning flashers turn on
automatically and the interior lights switch on for
approximately 30 minutes.

221
Malfunction and indicator lamps
Te ch n ica l
data
Instruments
and controls Operation Driving
Instrument
cluster display Practical hints Car care Index
Electronic stability program (ESP)/Electronic
traction system (4-ETS+) — warning lamp
The yellow warning lamp in the
speedometer dial comes on with the key in
steering lock position 2. It should go out
with engine running.
See page 203 for 4-ETS+ and page 205 for ESP if the
warning lamp lights up or flashes when the vehicle is
moving.
BAS/ESP malfunction indicator lamp The malfunction indicator lamp for the ESP
is combined with that of the BAS.
The yellow BAS / ESP malfunction indicator
lamp in the instrument cluster comes on with the key in
steering lock position 2. It should go out with the engine
running.
If the BAS / ESP malfunction indicator lamp remains
illuminated with the engine running, see page 199 for
BAS and page 205 for ESP. 4-ETS+ malfunction indicator lamp
The yellow ETS malfunction indicator lamp
in the instrument cluster comes on with the
key in steering lock position 2. It should go
out with the engine running.
If the ETS malfunction indicator lamp remains
illuminated with the engine running a malfunction has
been detected, see page 203 for 4-ETS+.
LOW RANGE indicator lamp The yellow LOW RANGE indicator lamp in
the instrument cluster comes on with the
key in steering lock position 2. With the
LOW RANGE mode deactivated it should go out with the
engine running.
With the LOW RANGE mode activated the LOW RANGE
indicator lamp is illuminated continuously.
If the indicator lamp blinks fast, one or more switching
conditions were not observed, or the LOW RANGE mode
is defective, see page 209 for LOW RANGE mode.
BAS ESP
ETSLOW
RANGE

254
Jump starting
Te ch n ica l
data
Instruments
and controls Operation Driving
Instrument
cluster display Practical hints
Car care Index
Proceed as follows: 1. Position the vehicle with the charged battery so that the jumper cables will reach, but never let the
vehicles touch. Make sure the jumper cables do not
have loose or missing insulation.
2. On both vehicles: • Turn off engine and all lights and accessories,
except hazard warning flashers or work lights.
• Apply parking brake and shift selector lever to
position “P”.
Important!
3. Clamp one end of the first jumper cable to the positive (+) under hood terminal of the discharged
battery and the other end to the positive (+) terminal
of the charged battery. Make sure the cable clamps
do not touch any other metal parts.
4. Clamp one end of the second jumper cable to the grounded negative (–) terminal of the charged
battery and the final connection to the negative (–)
terminal of the discharged battery. Important!
5. Start engine of the vehicle with the charged battery and run at high idle. Make sure the cables are not
on or near pulleys, fans, or other parts that move
when the engine is started. Allow the discharged
battery to charge for a few minutes. Start engine of
the disabled vehicle in the usual manner.
6. After the engine has started, remove jumper cables by exactly reversing the above installation
sequence, starting with the last connection made
first. When removing each clamp, make sure that it
does not touch any other metal while the other end
is still attached.
Notes:
If engine does not run after several unsuccessful
starting attempts, have it checked at the nearest
authorized Mercedes-Benz Light Truck Center.
Excessive unburned fuel may damage the catalytic
converter.

16 IntroductionSymbols
SymbolsThe following symbols are found in this
Operator’s Manual:
* Optional equipment is identified
with an asterisk. Since standard
equipment varies between models,
the descriptions and illustrations in
this manual may differ slightly from
the actual equipment of your vehi-
cle.

This symbol points to instructions for
you to follow.

A number of these symbols appearing
in succession indicates a multiple-step
procedure.
 Page This symbol tells you where to
look for further information on a
topic.
This continuation symbol marks
an interrupted procedure which
will be continued on the next
page.
-> In the glossary of technical
terms, this symbol is used to in-
dicate cross-references to term
definitions.
Display
Words appearing in the multi-
function display are printed in
the type shown here.
Warning!
G
Warning notices draw your attention to haz-
ards that may endanger your health or life,
or the health or life of others.!Highlights hazards that may result in
damage to your vehicle.iHelpful hints or further information you
may find useful.

23 At a glance
Cockpit
Item
Page
1
Hood lock release
217
2
Parking brake pedal
53
3
Parking brake release
53
4
Left cup holder
166
5
Combination switch

Exterior lights


High beam


Turn signals
49
6
Cruise control lever
150
7
Instrument cluster
116
8
Hazard warning flasher
switch
112
9
Lever for voice control
system*, see separate
operating instructions
Item
Page
a
Windshield wiper / washer
switch
49
b
Front Parktronic* warning
indicator
155
c
Glove box
164
d
Right cup holder
166
e
Storage compartment
f
Electrical outlet
170
g
Horn
h
Headlamp washer button*
131
j
Steering lock with ignition
33
k
Steering wheel lever
39

108 Controls in detailLightingManual headlamp mode
The low beam headlamps and parking
lamps can be switched on and off with the
combination switch. For combination
switch, see (
page 107).
Automatic headlamp mode
The parking lamps, low beam headlamps
and license plate lamps switch on and off
automatically depending on the brightness
of the ambient light.

Turn the combination switch toU.iIf you remove the key and open the
driver’s door while the parking lamps or
low beam headlamps are switched on,
then a warning sounds.
Warning!
G
If the combination switch is set toU,

the headlamps may switch off unexpect-
edly when the system senses bright am-
bient light, for example light from
oncoming traffic.


the headlamps will not be automatically
switched on under foggy conditions.
To minimize risk to you and to others, acti-
vate headlamps by turning combination
switch toõ when driving or when traffic
and / or ambient lighting conditions require
you to do so.
In low ambient lighting conditions, only
switch from positionU toõ with the
vehicle at a standstill. Switching fromU
toõ will briefly switch off the head-
lamps. Doing so while driving in low ambient
lighting conditions may result in an acci-
dent.
The automatic headlamp feature is only an
aid to the driver. The driver is responsible for
the operation of the vehicle's lights at all
times.iIf the automatic headlamp mode is ac-
tivated, the fog lamps can also be
switched on (
page 111). The low
beam headlamp and parking lamps are
activated simultaneously.