Mercedes-Benz 300 SD-Turbo Diesel 1985 User manual

Owner's Manual
Mercedes-Benz .
0

Drive Sensibly — Save Fuel
Fuel consumption depends to a great
extent on driving abits and operating
conditions.
In order to save fuel you s ould:
• ensure t at tire pressures are
correct
• not carry unnecessary loads
• remove ski racks or roof-mounted
luggage racks w en not in use
• not warm up your engine at idle
and wit t e ve icle at standstill
• avoid frequent acceleration and
deceleration
• ave all t e maintenance jobs
specified by us carried out at
regular intervals by an aut orized
MERCEDES-BENZ dealer.
Driving in low temperature weat er, in
stop-and-go city traffic and on s ort
ops, and in illy country as well,
increases fuel consumption.

Owner's Manual
300 SD-
HJRBO DIESEL
C assis 126 D
1985
Mercedes-Benz
®

O u r company and staff wis you many ours of
enjoyment wit your new ve icle.
You ave placed a lot of trust in our company name by
purc asing a MERCEDES, from w ic you may expect t at
it will give you long service wit a minimum of trouble, and
is easy to operate.
We ave just one request to make, oping t at it will benefit
you as well:
Please do not put t is manual aside wit out first carefully
reading it.
You may notice t at it contains many important recommen
dations t at s ould make t e operation of your MERCEDES
easier and even increase your pleasure driving it.
We wis you many miles of motoring pleasure.
Daimler-Benz Aktiengesellsc aft
3

Contents
Special equipment is also described
in this manual, including operating
instructions wherever necessary.
Since there are special-order items,
the descriptions and illustrations
herein may vary slightly from the
actual equipment of your vehicle.
If there are any equipment details that
are not shown or described in this
Owners Manual, your MERCEDES-
BENZ dealer will be glad to inform you
of correct care and operating proce
dures.
Vehicle Operation
Instruments and Controls ......... 10
Instrument Cluster ...................... 12
Keys, Doors ................................... 14
Master Key and
Supplementary K e y ................. 14
Flat Key ..................................... 14
Obtaining Replacement
Keys ........................................... 14
Opening, Locking and
Unlocking of Doors ................. 15
Central Locking System ......... 16
Anti-T eft Alarm System .... 17
Seats .............................................. 18
Adjusting Power Seats, Front 18
Ort opedic Seat Backrest ... 19
Arm Rest (Front Seats) ......... 20
Arm Rest (Rear Seat) ............. 20
Safety Flead Restraints, Rear . 21
Seat Fleater .............................. 21
Supplemental Restraint System 22
Seat Belts and Emergency
Tensioning Retractor ............. 22
Driver Airbag ............................ 25
C ontrols ......................................... 27
Steering Lock .......................... 27
Lig ting Switc ........................ 28
Combination Switc ............... 29
Cruise C ontrol .......................... 30
Automatic Climate C ontrol 31
Various Equipment ...................... 36
Exterior M irrors ........................ 36
Inside Rear View Mirror ......... 36
Sun Visors ................................ 37
Sliding R o o f .............................. 37
Interior Lam ps .......................... 38
Heated Rear Window ............. 38
Lig ter ....................................... 39
S elf below Rear Window ... 39
Power Windows ...................... 39
Radio ............................................. 40
T e last page
W at you s ould know at t e gas
station
5

Contents
Driving Ve icle Care Practical Hints
Hood .............................................
48 MERCEDES-BENZ Maintenance Safety Head Restraints
...............
Regular Inspections ...................
49 S ystem
...........................................
62 As trays
.......................................
Parking Brake ..............................
50 Spare Parts Service ...................
63 Rear Seat Cus ion
......................
Starting and Turning Cleaning and Care of t e Bleeding t e Fuel System
........
off t e Engine ..............................
50 Ve icle
...........................................
63 Turning off Engine Manually
Starting and S ifting Gears 52 Jobs related to C a re
...............
64 First Aid Kit ..................................
Safe Driving ..................................
54 Luggage or Ski Racks ...............
ABS-Brake System Spare W eel, Jack,
(Anti-Lock Brake System) ... 56 Ve icle Tool Kit
............................
Brake Pad Wear Indicator W eels, Tires, C anging W eels
Lamp .........................................
57 W eels, T ire s
............................
Brake Fluid ..............................
57 C anging W eels
...................
C arge Indicator Lamp ...........
57 Tire Inflation Pressure
...........
Fuel Reserve Warning Lamp . 57
Outside Temperature
Indicator .....................................
5/
Oil Pressure Gauge ...............
57
Coolant Temperature Gauge . 58
Engine Oil Consumption 58
Emission Control ...................
58
T e First 1500 km/1000 Miles . . 58
Special Operating Conditions .. 59
Winter Driving .......................... 59
Hints for Driving .....................
59
Hig Altitude Correction
Device .......................................
60
Tire C ains ..............................
60
Traveling Abroad
......................
60
68
69
69
70
70
71
71
71
72
72
73
74
6

C ecking Fuels, Coolants,
Lubricants, etc .........................
Engine Oil Level C eck
C ecking Coolant Level ..
Adding Coolant .................
Automatic Transmission
Fluid Level ..........................
Electrical System .................
Headlamp Adjustment ...
Replacing Bulbs ...............
Fuses ..................................
Batterie ..............................
Winds ield Wipers ...............
Emergency Operation of
Sliding Roof ............................
Unlocking t e Fuel Filler Flap
Jump Starting ........................
Tow-starting and Towing
t e Ve icle ..............................
echnical Data, Fuels, Coolants,
Lubricants, etc.
Identification Plates ...................
Ve icle Data Cards ......................
Warranty Coverage ......................
Tec nical D ata ..............................
Fuels, Coolants, Lubricants, etc.
Capacities ................................
Engine Oils ..............................
Brake Fluid ..............................
Diesel F uels ..............................
Coolants ...................................
Service Literature ........................
Consumer Information ...............
75
75
76
76
77
78
78
78
81
82
83
83
83
84
84
Contents
88
89
89
90
92
92
94
94
95
96
97
98
Vehicle Operation ^
Driving ^
Vehicle Care ^
Practical Hints ►
echnical Data, Fuels, k
Coolants, Lubricants, etc.
7

Vehicle Operation

Instruments and Controls
toK For more detailed descriptions see quoted pages.
A 1 Speaker grilles
V 2 Side ventilation outlets (page 31)
3 Swivelling outlets for non eated fres air (page 31)
4 Parking brake release andle (page 50)
5 Handle to disengage ood lock (page 48)
6 Parking brake pedal (page 50)
7 Combination switc (page 29)
8 Lig ting switc (page 28)
9 Cruise control (page 30)
10 Instrument cluster (page 12)
11 Horn control
12 Steering lock wit preglow/starter switc (page 27)
13 Lever for non eated fres air (page 31)
10
14 Switc for eated rear window (page 38)
15 Switc for electric sliding roof (page 37)
16 Switc for azard warning flas er system
17 Switc for automatic antenna (page 45)
18 Switc for rear passenger compartment
lamp (page 38)
19 Automatic climate control (page 31)
20 Radio (page 40)
21 As tray wit lig ter (page 39, 69)
22 Switc for left front seat eater (page 21)
23 Switc for rig t front seat eater (page 21)
24 Switc group for power windows (page 39)
25 Adjusting lever for exterior mirror on front
passenger side (page 36)
26 Loudspeaker — fader control
27 Glove compartment, illuminated (only in steering
lock positions “ 1 ” or “ 2” )

Instruments and Controls
!l4ll5|l6Wl7ii8
(
11

Instrument Cluster
1 Coolant temperature gauge
Up to red marking: Maximum permissible
temperature for an anticorrosion/antifreeze-
blended fill protecting down to —30° 0,1 — 22° F.
See page 58
2 Fuel gauge wit reserve warning lamp (yellow):
Comes on w en t e steering lock key is moved to
driving position “ 2” and must go out w en t e
engine is idling. See page 57
Fuel reserve and capacity, refer to page 93 and last
page
3 Oil pressure gauge (bar). See page 57
4 Turn signal indicator lamp, left (green)
5 Main odometer
6 Trip odometer
7 Turn signal indicator lamp, rig t (green)
8 Tac ometer
9 Electric clock
10 Knob for clock adjustment
(press in for adjustments)
11 Supplemental restraint system indicator lamp (red).
See page 25
12 Seat belt warning lamp (red)
13 ABS indicator lamp (yellow). See page 56
14 Outside temperature indicator. See page 57
15 Preglow indicator lamp (yellow)
16 Brake warning lamp (red) comes on if
• t e parking brake is engaged
• not enoug brake fluid is in t e reservoir
17 Brake pad wear indicator lamp (yellow):
Lig ts up during braking if t e front w eel brake
pads are worn down. See page 57
18 C arge indicator lamp (red):
Comes on w en t e steering lock key is moved to
driving position “ 2” and must go out w en t e
engine is idling. See page 57
19 Hig beam indicator lamp (blue)
20 Knob for instrument lamps and trip odometer
Rotate knob: instrument lamps intensity are infinitely
variable
Depress knob: trip odometer is reset

Instrument Cluster
4
13

Keys Doors
Master Key — square ead wit a red
dot — fits all locks on t e car. Arms/
disarms t e anti-t eft alarm system.
Supplementary Key — rounded ead
— fits only t e door locks and t e
steering lock. T is key is intended to
be used w enever t e car is left wit
an attendant. Be sure to lock glove
compartment and trunk wit t e
master key. T e supplementary key
cannot be used to de-activate t e
anti-t eft alarm after t e car was
locked wit t e master key.
Flat Key
T e flat key wit a red dot
fits all ve icle locks. Arms/
disarms t e anti-t eft alarm
system. We recommend t at
you carry t e flat key wit
you and keep it in a safe
place so t at it is always
andy, if needed (e.g. in your
wallet). Never leave t e flat
key in t e ve icle.
Obtaining Replacement Keys
You are given 4 keys wit your
ve icle. Replacement keys can be
obtained only via an aut orized
MERCEDES-BENZ dealer. For secur
ity reasons, obtaining replacement
keys requires considerable time.
14

Keys Doors
9394
W en t e rear door buttons are
pus ed down, t e rear doors cannot
be opened from t e outside or t e
inside. T ey can only be opened after
pulling buttons up.
T e driver’s door can be locked only if
it is closed and t e door lock as
properly engaged.
Opening the Doors
From outside: pull andle outwards (1).
From inside: pull andle in door trim
panel (4).
Locking and Unlocking of Doors
From t e outside: turn key.
From t e inside: actuate button.
2 Unlocking
3 Locking
15

Keys Doors
Central Locking System
T e entire ve icle may be locked or
unlocked wit t e central locking sys
tem:
• Using t e master key, supplemen
tary key, or by pus ing down or
pulling up t e interior door lock
buttons at t e front doors.
• From t e trunk using t e master
key only.
T e central locking system allows you
to lock or unlock all doors, trunk lid
and fuel filler flap simultaneously.
Doors
W en you lock t e car, all door lock
buttons s ould move down. If any one
stays up, t e respective door was not
properly closed. You s ould t en
unlock t e car, open and re-close t is
door, and lock t e car again.
Note:
T e central locking system can be
engaged from t e driver-side door
lock button, provided t e door is
completely closed. It can also be
engaged from t e passenger-side if
t e ignition key is removed, or
engaged in t e lock wit out being
turned (key in position “ 0” ).
If t e car as been locked from t e
outside wit t e master key, t e anti
t eft alarm will come on if a door is
opened from t e inside.
Trunk
To unlock t e trunk wit t e central
locking system, turn t e master key in
t e trunk lock completely to t e left
and let it return to t e normal posi
tion. Pus in trunk lock button and
open t e trunk. To lock t e trunk, turn
t e master key completely to t e rig t
and let it return to t e normal posi
tion.
T e trunk can remain locked w ile t e
central locking system is unlocked
(e.g. w ile driving or w en leaving t e
car in a situation w ere it must be
driven using t e supplementary key
but you wis t e trunk to remain
locked at parking lots, works ops,
etc.). Turn t e master key completely
to t e rig t and pull it out in t at posi
tion. Now t e trunk can only be
unlocked wit t e master key by turn
ing it back to t e left.
Important!
Contrary to prior model year ve icles,
if t e trunk is unlocked wit t e cen
tral locking system engaged, t e
doors and fuel filler flap will also be
unlocked. After closing t e trqnk, t e
central locking system must again be
engaged using t e key!
Note:
If t e fuel filler flap cannot be opened,
refer to “ Unlocking t e Fuel Filler
Flap” (page 83).

Keys Doors
Anti- heft Alarm System
T e anti-t eft alarm can be armed or
disarmed wit t e master key (identi
fied by red dot) by locking or unlock
ing eit er front door or t e trunk.
Operation
Once t e alarm system as been
armed, t e ve icle lamps will flas and
t e orn will sound intermittently
w en an unaut orized person tries to:
• open a door
• open t e trunk
• remove t e radio
• switc on or bridge t e steering
lock
• step on t e brake pedal
• raise t e ve icle, i.e. towing away.
T e alarm will last approximately
150 seconds in t e form of blinking
exterior lamps. At t e same time an
additional orn will sound intermit
tently for 60 seconds, and repeat for
anot er 60 seconds after a 30 second
pause.
T e alarm will stay on even if t e arm
ing element (a door, for example) is
immediately closed.
To avoid setting off t e alarm uninten
tionally, do not arm t e alarm system
in t e following situations; e.g.: Auto
ferry, auto train, w en itc ing/
un itc ing a trailer, or eavy loading/
unloading. For t is purpose use t e
supplementary key and not t e mas
ter key for locking t e ve icle.
Special Function
To activate t e anti-t eft alarm from
t e trunk, turn t e master key in t e
trunk lock completely to t e rig t and
pull it out in t is position.
If you want t e alarm system to be
armed at t e trunk only, turn t e mas
ter key in t e trunk lock completely to
t e rig t and pull it out in t at posi
tion. T en disarm t e rest of t e ve i
cle by unlocking eit er front door wit
t e master key. You can now lock or
unlock t e doors and filler flap, as well
as start t e engine, in t e usual man
ner using t e supplementary key.
Do not give t e master key to an
unaut orized person. We recommend
t at you carry t e flat key safely wit
you (e.g. in your wallet) so t at it is
always andy, if needed. T is key as
t e same function as t e master key.

Seats
Adjusting Power Seats, Front
T e switc es are located in eac front
door.
Turn key to steering lock position “ 2”
(wit t e driver's door opened, t e
power seats can also be operated
wit t e key removed or in steering
lock positions “ 1” or ‘‘0” ).
Seat and Head Restraint Adjustment:
A Seat cus ion adjustment.
B Seatback adjustment.
C Head restraint adjustment.
Adjust ead restraint to support
t e back of t e ead approxi
mately at ear level. T e ead res
traint can also be turned forward
by and.
Note:
T e ead restraint s ould not be
pulled up past t e detent w en
making adjustments.
Warning!
Do not make adjustments wit ve icle
in motion.
Storing seat and safety ead restraint
positions in memory:
D Memory button.
E Position buttons “ 1” and “ 2” .
Two sets of seat/ ead restraint posi
tions may be programmed in memory.
After t e seat and ead restraints are
positioned, pus memory button D,
and wit in 3 seconds pus position
button “ 1” . T e second set of posi
tions for t e seat and ead restraint
can be stored by pus ing position
buttons D and “ 2” .
Recalling seat and ead restraint
positions stored in memory :
To recall a seat/ ead restraint posi
tion, pus position button “ 1” or “ 2”
until seat/ ead restraint movement
as stopped. For safety reasons, t e
seat/ ead restraint movement stops
after releasing t e position button.
Warning!
Do not make adjustment wit ve icle
in motion.
To remove ead restraint refer to
“ Practical Hints” .
Note:
Prior to operating t e ve icle, t e
driver s ould adjust t e seat eig t
for proper vision as well as fore/aft
placement and seat back angle to
18