brake light MERCEDES-BENZ ML500 2006 W163 Owner's Guide

398 Practical hintsWhat to do if …Display message
Possible cause
Possible solution
ABS
unavailable
See Operator’s Manual
The ABS was deactivated because of
insufficient power supply. The charg-
ing voltage has fallen below ten
volts.
The brake system is still functioning
normally but without the ABS
available.

Switch off electrical consumers that are
currently not needed, e.g. seat heating*.

If necessary, have the generator
(alternator) and the battery checked.
When the voltage is above this value again, the
ABS is operational again and the message in
the multifunction display should disappear.
Battery
protection
Convenience functs.
Temporarily
Unavailable
The battery has insufficient voltage
and can no longer supply conve-
nience functions such as the rear
window defroster.
As soon as the on-board voltage is sufficient,
the consumers will switch on again.
Please note:
Convenience Functions
Available again
On-board voltage is sufficient; the
consumers will switch on again.
Cruise
control
Drive to workshop
Cruise control is malfunctioning.

Have cruise control checked by an
authorized Mercedes-Benz Light Truck
Center.
DSR
Malfunction
Downhill Speed Regulation is
malfunctioning.

Have the Downhill Speed Regulation
checked by an authorized Mercedes-Benz
Light Truck Center.

399 Practical hints
What to do if …
Display message
Possible cause
Possible solution
ESP
unavailable
See Operator’s Manual
In addition, the yellow ESP
® warning
lampv comes on.
The ESP
® is deactivated because of
a malfunction or interrupted power
supply.

Continue driving with added caution.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Failure to follow these instructions increases
the risk of accident.
If the yellow ESP
® warning
lampv flashes while driving and
this message appears, the electron-
ic traction system has switched off
to prevent overheating of the drive
wheel brakes.
As soon as the brakes have cooled off, the
electronic traction system switches on again.
The message in the multifunction display disap-
pears and the ESP
® warning lampv go out.
The self-diagnosis has not yet been
completed.
The display will clear after driving a short dis-
tance at a vehicle speed of above 12 mph
(20 km/h).
Malfunction
Visit workshop
In addition, the yellow ESP
® warning
lampv comes on.
The ESP
® has detected a malfunc-
tion and switched off.
The ABS may still be operational.

Continue driving with added caution.

Have the system checked at an authorized
Mercedes-Benz Light Truck Center as soon
as possible.
Failure to follow these instructions increases
the risk of an accident.

400 Practical hintsWhat to do if …Display message
Possible cause
Possible solution
ESP
Display malfunction
Visit workshop
In addition, the yellow ESP
® warning
lampv comes on.
The ESP
® or the ESP
® display is
malfunctioning.

Continue driving with added caution.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Failure to follow these instructions increases
the risk of accident.
P
Gear selector lever
in park position
You have attempted to turn off the
engine with the KEYLESS-GO*
start/stop button with the gear
selector lever not inP.
You have opened the driver’s door
with the gear selector lever not inP.

Select gear positionP using the gear
selector lever.
Please move gear
selector lever to N or P
You have attempted to start the en-
gine with the KEYLESS-GO*
start/stop button while the gear
selector lever was in positionR orD.

Select gear positionP orN using the gear
selector lever.
Make sure the brake pedal is depressed
when attempting to start the engine with
the KEYLESS-GO* start/stop button.

407 Practical hints
What to do if …
Symbol messagesDisplay symbol
Display messages
Possible cause
Possible solution
#
Undervoltage
Switch off consumers
The battery has insufficient volt-
age.

Turn off unnecessary electrical
consumers.
malfunction
Visit workshop
The battery was charged with a
battery charger or jump started.

Have the battery checked at a service
station.
Battery/Alternator
Stop vehicle
The battery is no longer charg-
ing.
Possible causes:

alternator malfunctioning


broken poly-V-belt
Do not forget that the brake sys-
tem requires electrical energy
and may be operating with re-
stricted capability. Considerably
greater brake pedal force is
required and the stopping dis-
tance is increased.

Stop immediately and check the
poly-V-belt.
If it is broken:

Do not continue to drive. Otherwise the
engine will overheat due to an inoperative
water pump which may result in damage
to the engine. Notify an authorized
Mercedes-Benz Light Truck Center.
If it is intact:

Drive immediately to the nearest autho-
rized Mercedes-Benz Light Truck Center.
Adjust driving to be consistent with re-
duced braking responsiveness.

408 Practical hintsWhat to do if …Display symbol
Display message
Possible cause
Possible solution
2
Brake wear
Visit workshop
The brake pads have reached
their wear limit.

Brake pad thickness must be visually in-
spected at the intervals specified in the
Maintenance Booklet.

Have the brake pads replaced as soon as
possible.
;
(USA only)
3
(Canada only)
Changed braking behavior
Drive with extreme care
A malfunction in the Electronic
Brake Proportioning (
page 98)
was detected.

Continue driving with added caution.
Wheels may lock during hard braking,
reducing steering capability.

Read and observe messages in the dis-
play.

Have the system checked at an autho-
rized Mercedes-Benz Light Truck Center
as soon as possible.
Failure to follow these instructions increases
the risk of an accident.

409 Practical hints
What to do if …
Display symbol
Display message
Possible cause
Possible solution
;
(USA only)
!
(Canada only)
Release
parking brake
You are driving with the parking
brake set.

Release the parking brake (
page 52).
Brake fluid too low
Visit workshop
There is insufficient brake fluid
in the reservoir.

Risk of accident! Stop the vehicle and no-
tify an authorized Mercedes-Benz Light
Truck Center. Do not add brake fluid! This
will not solve the problem.
Warning!
G
Driving with the message
Brake fluid
too low Visit workshop
displayed can
result in an accident. Have your brake
system checked immediately. Do not add
brake fluid before checking the brake
system. Overfilling the brake fluid reservoir
can result in spilling brake fluid on hot
engine parts and the brake fluid catching
fire. You can be seriously burned.!If you find that the brake fluid in the
brake fluid reservoir has fallen to the
minimum mark or below, have the
brake system checked for brake pad
thickness and leaks.
!Brake pad thickness must be visually
inspected by a qualified technician at
the intervals specified in the
Maintenance Booklet.

418 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause
Possible solution
.
3rd brake lamp
The high mounted brake lamp is
malfunctioning. This message
will only appear if all light emit-
ting diodes have stopped work-
ing.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Brake lamp, left
Substitute bulb on
The left brake lamp is malfunc-
tioning. A substitute bulb is be-
ing used.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Brake lamp, right
Substitute bulb on
The right brake lamp is malfunc-
tioning. A substitute bulb is be-
ing used.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Display malfunction
Visit workshop
The display for the lamps or the
system is malfunctioning.

Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Front foglamp,
left
The left front fog lamp is mal-
functioning.

Replace the bulb as soon as possible.
Front foglamp,
right
The right front fog lamp is mal-
functioning.

Replace the bulb as soon as possible.
Rear foglamp,
left
The left rear fog lamp is malfunc-
tioning.

Replace the bulb as soon as possible.
Rear foglamp,
right
The right rear fog lamp is mal-
functioning.

Replace the bulb as soon as possible.

431 Practical hints
Where will I find ...?
Trunk area shown with spare wheel
removed1Wheel bolt wrench with screwdriver
2Vehicle jack
3Collapsible wheel chock
4Spare fuses, fuse chart, fuse extractor
5Towing eye bolt
6Alignment bolt
7Wheel bolts for 17" light alloy rims or
Minispare wheel1Wheel bolt wrench
2Screwdriver
3Interchangeable slot
Screwdriver2 is placed inside the handle
of wheelbolt wrench1.Vehicle jack
iVehicles with scissors-type jack see
separate instructions.
!To prevent damage, always disengage
the elastic strap and lower the cargo
compartment floor (
page 430) be-
fore closing the tailgate.
Warning!
G
The jack is designed exclusively for jacking
up the vehicle at the jack take-up brackets
built into both sides of the vehicle. To help
avoid personal injury, use the jack only to lift
the vehicle during a wheel change. Never
get beneath the vehicle while it is supported
by the jack. Keep hands and feet away from
the area under the lifted vehicle. Always
firmly set parking brake and block wheels
before raising vehicle with jack.
Do not disengage parking brake while the
vehicle is raised. Be certain that the jack is
always vertical (plumb line) when in use, es-
pecially on hills. Always try to use the jack
on level surface.
Make sure that the jack arm is fully seated
in the jack take-up bracket. Always lower
the vehicle onto sufficient capacity jack-
stands before working under the vehicle.

443 Practical hints
Replacing bulbs
Replacing bulbs
Bulbs
Safe vehicle operation depends on proper
exterior lighting and signaling. It is there-
fore essential that all bulbs and lamp as-
semblies are in good working order at all
times.
Correct headlamp adjustment is extremely
important. Have headlamps checked and
readjusted at regular intervals. See an
authorized Mercedes-Benz Light Truck
Center for headlamp adjustment.Front lamps
iSubstitute bulbs will be brought into
use when the following lamps malfunc-
tion:

Brake lamps


Parking lamps


Turn signal lamps


Tail lamps
Observe the messages in the multi-
function display (
page 418).
iIf the headlamps or front fog lamps are
fogged up on the inside as a result of
high humidity, driving the vehicle a dis-
tance with the lights on should clear up
the fogging.
Lamp
Type
1
Parking and standing
lamp
W5W
2
High beam/high
beam flasher lamp
H7 (55 W)
3
Low beam
1
1Vehicles with Bi-Xenon headlamps*: Do not re-
place the Bi-Xenon bulbs yourself. See your autho-
rized Mercedes-Benz Light Truck Center.
H7 (55 W)
Bi-Xenon*:
D2S-35 W
4
Additional turn signal
lamp
LED
5
Side marker lamp
WY 5 W
6
Turn signal lamp
3457 AK S-8
(30/2.2 cp
bulb)
7
Front fog lamp
H11 (55 W)

444 Practical hintsReplacing bulbsRear lamps Notes on bulb replacement


Only use 12 volt bulbs of the same type
and with the specified watt rating.


Switch lights off before changing a bulb
to prevent short circuits.


Always use a clean lint-free cloth when
handling bulbs.


Your hands should be dry and free of oil
and grease.


If the newly installed bulb does not
come on, visit an authorized
Mercedes-Benz Light Truck Center.
Lamp
Type
8
High mounted brake
lamp
LED
9
Brake lamp
P21W
a
Backup lamp
P21W
b
Turn signal lamp
PY 21 W
c
Side marker lamp
P21/4W
d
Tail, parking, standing
lamp, rear fog lamp
(only driver’s side)
P21/4W
e
License plate lamps
C5W
Warning!
G
Bulbs and bulb sockets can be very hot.
Allow the lamp to cool down before chang-
ing a bulb.
Keep bulbs out of reach of children.
Halogen lamps contain pressurized gas.
A bulb can explode if you:

touch or move it when hot


drop the bulb


scratch the bulb
Wear eye and hand protection.
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.