1997 MERCEDES-BENZ ML320 warning light

GF54.30-P-3010A
Function of acoustic warnings
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

Display
Function

Turn signal indicator

ticking
Switching on the turn signal indicator is

indicated acoustically by the turn signal

indicator ticking. The driver's attention is

brought to a defect in the turn signal system

by the turn signal indicator ticking at a higher

frequency.

Turn signal indicator ticking is generated

electromagnetically. The frequency

corresponds to that of the turn signal indicator

lamp.

The signal comes from the combination relay

(turn signal indicator with trailer coupling, rear

window defroster), wiper motor, ATA (N10/2),

on model 210 from the multi-function control
module (N10-1) or from the driver-side signal-

acquisition and actuation module (SAM)

(N10/1), on model 163 from the All-Activity

Module (AAM, N10), on model 168 it is

generated by the integrated turn signal

indicator control in the instrument cluster (A1).

Parking brake reminderThe parking brake warning sounds when

terminal 15g is ON from a speed of approx. 5

km/h.
Piezoelectric loudspeaker (quartz), function

GF54.30-P-3017A

Gear warning, model 168

only with automatic

transmission or automatic

clutch
The acoustic gear warning is active, when

D
a gear is engaged
and

D
the brake is
not
depressed
and

D
the accelerator pedal is
not

pressed
and


D
the driver's door is opened.

These conditions are processed in the gear

recognition module (A61) or in the automatic

clutch control module (N15/4). The

information on the status of the driver's door

is available as a CAN message. It is

transmitted by the instrument cluster (A1).

Piezoelectric loudspeaker (quartz), function

GF54.30-P-3017A

Speed warning
The speed warning sounds when terminal

15g is ON from a speed of approx. 120 km/h.

(on national variants only)

Piezoelectric loudspeaker (quartz), function

GF54.30-P-3017A

Speed limit warning
The warning sounds if the set maximum

speed is exceeded by at least 6 km/h.
(on vehicles with variable cruise control only)

Piezoelectric loudspeaker (quartz), function

GF54.30-P-3017A

Seat belt reminder
On national variants only
Piezoelectric loudspeaker (quartz), function

GF54.30-P-3017A

Switched-on lights

reminder
The switched-on lights reminder sounds when

terminal 15g is OFF, terminal 58k is ON,

when the starter key is removed and the

driver's door is opened.
Piezoelectric loudspeaker (quartz), function

GF54.30-P-3017A

Key reminder
The key reminder when terminal 15g is OFF

and the driver's door is open when the starter

key is inserted
Piezoelectric loudspeaker (quartz), function

GF54.30-P-3017A

Soft top reminder, model

170 only
The soft top reminder sounds when terminal

15 is ON and soft top reminder input is on low

level.
Piezoelectric loudspeaker (quartz), function

GF54.30-P-3017A

Copyright DaimlerChrysler AG 05.06.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorde
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Fig. 8: Connecting Hand Held Tester Scan Tool To OBD-II Data Link Connector
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
ON-VEHICLE TESTING
WIRING CONTINUITY
1. Connect voltmeter between generator B+ terminal and ground. Voltmeter should indicate battery voltage.
If battery voltage is not indicated, check battery and check wiring between generator and battery for
corrosion, loose terminals, etc.
2. Turn ignition on and ensure instrument cluster charge indicator light (battery symbol) comes on. If light
does not come on, check wiring between generator and warning light, including indicator bulb.
GENERATOR OUTPUT
1. Ensure connections at battery and generator are clean and tight. Ensure generator, engine and body are
properly grounded. Ensure generator drive belt is properly adjusted and in good condition.
2. Connect load tester/ammeter as per tester manufacturer's instructions. Connect voltmeter leads to battery
terminals. See Fig. 9
. Start engine and run at 2200 RPM for V6 or 2500 RPM for V8. Adjust load tester
to obtain maximum generator output. DO NOT allow voltage to drop to less than 12.7 volts.
3. Maximum generator output should be within a few amps of generator rated output stamped on generator.
If output is not within a few amps of generator rated output, check generator diodes. See DIODE TEST
.
Replace
generator as necessary.

2001 Mercedes-Benz ML320
2001-04 STARTING & CHARGING SYSTEMS Generators & Regulators - 163 Chassis
me
Saturday, October 02, 2010 3:20:32 PMPage 14 © 2006 Mitchell Repair Information Company, LLC.

AD54.30-P-3000-03A
Display instruments/multi-function display

function check IC

Display

instruments

The display instruments must indicate according to operating

conditions.

Phototransistor (models 202, 208, 210)

Point a beam of light at the phototransistor with a pocket lamp, the

display illumination of the LCD displays (outside temperature, trip

odometer, total mileage recorder and electronic clock) must get

brighter.
Instrument cluster with multi-function display

If there are malfunctions (e.g. brake linings worn, coolant level too

low, exterior lamp failure etc.) or system faults (anti-lock brake

system faulty, supplemental restraint system faulty) the warning

display with warning information is inserted in place of outside

temperature, odometer, total mileage recorder and electronic clock.

The warning information is displayed in yellow or red depending on

the fault and a warning tone also sounds.
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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 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
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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

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463
All
-----

1)
Recognition: existing "airbag Off" warning light in center

console.

2)
With HHT functions menu point 5 Coding Reboard child seat. If

only the passenger side airbag is de-activated, then program
menu point Vehicle equipment.
3)

Depending on model and version, unplug one or two

connectors at the passenger side airbag and insert the

corresponding replacement resistors.

4)
Without ACSR, with seat belt force limiter.

Immobilizing passenger side airbag certificate
Model 124, 126, 129, 140, 163 up to VIN

145263, 170, 202, 210


Have customer sign certificate after

immobilization

OF91.60-P-1000-01A

Cancel immobilization

D
To re-activate the passenger side airbag remove the ignition

resistor at the cable.

D
Fit together connector at passenger side airbag.

D
Fit together connector at passenger side ETR (on models fitted

with seat belt force limiter).
D

Use HHT or STAR Diagnosis tool (DAS) to re-program

passenger side airbag and passenger side ETR in the SRS

control module to "YES".

D
Remove sticker on passenger side airbag and render invalid in
Owner's Manual.

D
Complete re-activation on certificate after immobilization.

D
If re-activated, delete de-activation in vehicle documents.

Parts ordering notes
Part no.

Designation
Quantity

140 868 00 50
Ignition resistor (replacement resistor)
as required

140 817 15 20
Sticker (without seat belt force limiter)
2

210 817 20 20
Sticker (with seat belt force limiter)
2

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AD54.30-P-5000-03A
Directly controlled display instruments

troubleshooting chart IC

Directly controlled display instruments or indicator

lamp/warning message:

D
Outside temperature indicator

D
Fuel gauge

D
Oil pressure gauge (models 129 and 140 only)

D
Left turn signal indicator lamp

D
Right turn signal indicator lamp

D
High beam indicator lamp

D
Fuel reserve indicator lamp

D
Airbag SRS indicator lamp/MIL

D
AIRBAG OFF indicator lamp (only model 163 except

I )
D
Low brake fluid level/parking brake indicator lamp (only brake

fluid direct)

(both functions via CAN on model 163)

D
Low windshield washer fluid level indicator lamp (except

models 163 and 168)
D

Low ECL indicator lamp (except models 163 and 168)

D
Generator charge indicator lamp

D
Seat belt reminder lamp

D
Seat belt/backrest lock reminder lamp

D
Exterior lamp failure indicator lamp

D
Hydraulic fluid level indicator lamp (models 202 and 210 only)

D
ADS MIL, suspension

D
Turn signal clicking

D
Seat belt reminder lamp

D
Light reminder lamp

D
Key reminder lamp

D
Soft top reminder lamp (model 170 only)

D
Steering lock warning lamp (

I )

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