2006 MERCEDES-BENZ R500 belt

397 Operation
Vehicle care
Paintwork, painted body components
Mercedes-Benz approved Paint Care
should be applied when water drops on the
paint surface do not “bead up”. This should
normally be done every 3 to 5 months, de-
pending on the climate and washing deter-
gent used.
Mercedes-Benz approved Paint Cleaner
should be applied if the paint surface
shows signs of dirt embedding (i.e. loss of
gloss).
Do not apply any of these products or wax
if your vehicle is parked in the sun or if the
hood is still hot.
Use the appropriate MB-Touch-Up
Stick for quick and provisional repairs
of minor paint damage (i.e. chips from
stones, vehicle doors, etc.).Engine cleaning
Prior to cleaning the engine compartment
make sure to protect electrical compo-
nents and connectors from the intrusion of
water and cleaning agents.
Corrosion protection, such as MB Anticor-
rosion Wax, should be applied to the en-
gine compartment after every engine
cleaning. Before applying, all control link-
age bushings and joints should be lubricat-
ed. The poly-V-belt and all pulleys should
be protected from any wax.Vehicle washing
In the winter, thoroughly remove all traces
of road salt as soon as possible.
When washing the underbody, do not for-
get to clean the inner sides of the wheels.!Affixing stickers, adhesive tape or sim-
ilar materials to painted body compo-
nents may damage the paintwork.
iVehicles with KEYLESS-GO*:
If a door handle is hit by a strong jet of
water, and a SmartKey with
KEYLESS-GO* is in close proximity, i.e.
within approximately 3 ft (approxi-
mately 1 m), the vehicle could be
inadvertently locked or unlocked.

402 OperationVehicle careHard plastic trim items
Use Mercedes-Benz approved Interior
Care, a soft, lint-free cloth and apply
with light pressure.
Steering wheel

Wipe with a damp cloth and dry thor-
oughly or clean with Mercedes-Benz
approved Leather Care.
Carpets

Use Mercedes-Benz approved Carpet
and Fabric Care for cleaning the car-
pets.Headliner and rear window shelf

Use a soft bristle brush or a dry-sham-
poo cleaner in case of excessive dirt.
Seat belts

Only use clear, lukewarm water and
soap.Wood trims

Dampen cloth using water and use
damp cloth to clean wood trims in your
vehicle.
Wood trims
Dampen cloth using water and use damp
cloth to clean wood trims in your vehicle.
Do not use solvents like tar remover or
wheel cleaner nor polishes or waxes as
these may be abrasive.
!To prevent scratches, do not use scour-
ing agents.
!The webbing must not be treated with
chemical cleaning agents. Do not dry
the webbing at temperatures above
176°F (80°C) or in direct sunlight.Warning!
G
Do not bleach or dye seat belts as this may
severely weaken them. In a crash they may
not be able to provide adequate protection.
!Do not use solvents like tar remover or
wheel cleaner nor polishes or waxes as
these may be abrasive.

410 Practical hintsWhat to do if …Problem
Possible cause/consequence
Suggested solution
<
The red seat belt telltale comes
on and a warning chime sounds
for approximately 6 seconds
after starting the engine with all
doors closed.
The seat belt telltale reminds you and your
passengers to fasten your seat belts before
driving off.

Fasten your seat belts.
The seat belt telltale goes out.
<
The red seat belt telltale remains
illuminated after driving off. The
vehicle’s speed does not exceed
15 mph (25 km/h).
You and/or your front passenger have
forgotten to fasten your seat belts.

Fasten your seat belts.
There are items placed on the front passen-
ger seat and therefore the system senses the
front passenger seat as being occupied.

Remove the items from the front
passenger seat and put them in a safe
place.
<
The red seat belt telltale flashes
and you additionally hear an in-
termittent warning chime with in-
creasing intensity for a maximum
of 60 seconds from the time the
vehicle’s speed exceeds 15 mph
(25 km/h).
You and/or your front passenger have
forgotten to fasten your seat belts.

Fasten your seat belts.
There are items placed on the front passen-
ger seat and therefore the system senses the
front passenger seat as being occupied.

Remove the items from the front
passenger seat and put them in a safe
place.
iAfter 60 seconds with an unfastened
seat belt on one of the front seats, the
warning chime stops sounding and the
seat belt telltale illuminates continu-
ously. The seat belt telltale will only go
out if both the driver and front passen-
ger’s seat belt are fastened, or the ve-
hicle is standing still and a front door is
opened.

429 Practical hints
What to do if …
Symbol messagesDisplay symbol
Display messages
Possible cause/consequence
Possible solution
#
malfunction
Visit workshop
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 in a safe location or as soon as it is
safe to do so 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
reduced braking responsiveness.

435 Practical hints
What to do if …
Display symbol
Display messages
Possible cause/consequence
Possible solution
Ï
Coolant
Stop, engine off
The poly-V-belt could be broken.

Stop the vehicle in a safe location or as soon
as it is safe to do so and immediately turn off
the engine.

Check the poly-V-belt.
If it is broken:

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

Do not continue to drive the vehicle with this
message displayed. Doing so could result in
serious engine damage that is not covered by
the Mercedes-Benz Limited Warranty.

Observe the coolant temperature in the
multifunction display (
page 168).

Drive immediately to the nearest authorized
Mercedes-Benz Light Truck Center.

450 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause/consequence
Possible solution
<
Seat belt system
Drive to workshop
The seat belt system is malfunctioning.

Visit an authorized Mercedes-Benz
Light Truck Center as soon as
possible.
9
Service memory full
See Operator’s Manual
The maintenance service memory cannot
save any more data.

Have the service memory checked by
an authorized Mercedes-Benz Light
Truck Center.
K
Close
tilt/sliding sunroof
You have opened the driver’s door with
the SmartKey removed from the starter
switch and the sliding portion of the
tilt/sliding sunroof* open.

Close the tilt/sliding sunroof*
(page 255).
J
Close
tilt/sliding sunroof
You have opened the driver’s door with
the SmartKey removed from the starter
switch and the tilt portion of the
tilt/sliding sunroof* open.

Close the tilt/sliding sunroof*
(page 255).

507 Technical data
Parts service
Warranty coverage
Identification labels
Layout of poly-V-belt drive
Engine
Rims and tires
Electrical system
Main Dimensions
Weights
Fuels, coolants, lubricants, etc.

512 Technical dataLayout of poly-V-belt driveR 3501Idler pulley
2Idler pulley
3Automatic belt tensioner
4Power steering pump
5Air conditioning compressor
6Crankshaft
7Coolant pump
8Generator (alternator)
R 5001Automatic belt tensioner
2Power steering pump
3Air conditioning compressor
4Crankshaft
5Coolant pump
6Generator (alternator)
7Idler pulley