low beam MERCEDES-BENZ SL-Class 2001 R129 User Guide

246 Exterior lamps
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Headlamp assembly (Xenon)1Headlamp horizontal adjustment screw
2Headlamp vertical adjustment screw
3Adjuster for horizontal adjustment scale
4Cover for low beam headlamp
5Latch for cover (4)
6Cover for high beam headlamp
7Latch for cover (6)
Wa r n i n g !
Because of high voltage in Xenon lamps, it is
dangerous to replace the bulb or repair the lamp
and its components. We recommend that you have
such work done by a qualified technician.

247 Exterior lamps
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index 8Turn signal, parking, side marker and standing
lamp bulb
9Electrical connector for high beam headlamp bulb
10Electrical connector for low beam headlamp bulb

248 Exterior lamps
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Adjusting headlamp aim
Correct headlamp adjustment is extremely important.
To check and readjust a headlamp, follow steps 1
through 7. Please note:
• Adjustments to low beam simultaneously aim the
high beam.
• Vehicle should have a normal trunk load.
• Vertical aim adjustments change horizontal aim.1. Park vehicle on level surface approximately 25 ft.
(7.6 m) from a vertical test screen or wall. The
centerline of the vehicle must be at a 90° angle to
the test screen.
2. (Low beams on):
Using a carpenter’s level, align and mark a vertical
centerline (8) on the test screen using the vertex of
the angle formed in each beam image. As a check,
the distance between centerlines should be
49
5/8 inches (1260 mm). If the distance does not
check, have the system verified by an authorized
Mercedes-Benz Center.
3. Open hood.
4. Vertical headlamp aim (Low beams on):
Turn adjusting screw (2) (counterclockwise to adjust
headlamp downward, clockwise upward) until
bubble in the level (6) is centered on the “0” mark.
Graduations: 0.18° pitch.

249 Exterior lamps
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data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index 5. Horizontal headlamp aim (Low beams on):
Turn adjusting screw (1) (Right front headlamp:
counterclockwise to adjust to the left, clockwise to
the right; left front headlamp: counterclockwise to
adjust to the right, clockwise to the left.) until the
headlamps (low beam) illuminate the test screen as
shown. The vertex of the angle formed in each beam
image should align with the vertical centerline (8) of
each lamp. The left and right headlamps must be
adjusted individually.6. This indicator (7) in the sight glass should align
with the “0” mark after any horizontal adjustment.
If it does not, depress latch (5) and remove access
cover (4) from the headlamp (left side only). Insert
and turn screwdriver on adjuster (3) until scale (7)
is centered on the “0” mark.
Graduations: 0.38° pitch.
7. Reinstall access cover (4).
Note:
If it is not possible to obtain a proper headlamp
adjustment, have the system checked at your authorized
Mercedes-Benz Center.

287 Index
Te ch n ica l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex
DDisplay illumination ........................................................ 77
Door control panel ........................................................... 20
Door pockets ................................................................... 129
Doors .................................................................................. 34
Drinking and Driving .....................................................176
Drive sensibly - Save Fuel .............................................176
Driving instructions .......................................................176
Block heater ............................................................... 183
Brakes ......................................................................... 177
Deep water ................................................................. 182
Pedals ...........................................................................176
Traveling abroad ....................................................... 183
Winter driving ........................................................... 182
Driving off ....................................................................... 178EEconomy ............................................................................ 93
Electronic stability program (ESP) .............................. 192
Emergency call
See Tele Aid ............................................................... 156
Emergency tensioning retractor (ETR) ......................... 59
Emergency trunk lid release button ............................. 40Emergency unlocking in
case of accident ........................................................... 37
Emission control ............................................................ 164
Engine compartment .................................................... 220
Engine oil
Additives .................................................................... 279
Capacities .................................................................. 277
Checking level .......................................................... 222
Consumption ................................................................83
Engine oils ................................................................. 279
Low level warning lamp ........................................... 210
Engine oil level indicator ................................................82
Engine oil temperature gauge ........................................ 83
Entrance lamps in footwells,
exit lamps in doors ...................................................120
ESP (Electronic Stability Program) ............................. 192
Control Switch ........................................................... 194
Malfunction indicator lamp .................................... 207
Synchronizing ........................................................... 193
Warning lamp ........................................................... 207
ETR (Emergency tensioning retractor) .........................59
SRS indicator lamp .................................................. 206
Exterior lamp switch .......................................................84
Exterior lamps ............................................................... 243
Adjusting headlamp aim ......................................... 248
Bulb for high and low beam ................................... 245