2005 MERCEDES-BENZ SPRINTER clock reset

MAINTENANCE - WITH ASSYST MAINTENANCE
COMPUTER
ASSYST provides information on the best possible
timing for maintenance work.
NOTE: The engine manufacturer strongly recom-
mends the use of synthetic engine oils, such as
TMobil 1 SAE 0W-40.
When the next maintenance service is due, this
will be indicated in the multi-function display with
the wrench icon symbol displayed in km/miles or
days.
²One wrench icon showing indicates Oil Service
is necessary.
²Two wrench icons showing indicates Mainte-
nance Service is necessary ± displayed in km/miles or
days.
If the display shows the number of days, a clock
symbol will also appear in the multi-function display.
You should have the maintenance performed
within the stated period/distance.
The service indicator should be reset after an oil
service and/or maintenance service has been per-
formed.
REGULAR CHECK-UPS
To maintain the safe operation of the vehicle, it is
recommended that the following tasks be performed
on a regular basis (i.e. weekly or whenever the vehi-
cle is refueled). Check:
²Engine oil level
²Brake system, clutch mechanism ± fluid level
²Battery ± acid level
²Windshield washer system and headlamp clean-
ing system ± fluid level
²Mechanical assemblies (e. g. engine, transmis-
sion, etc.) ± check for leaks
²Condition of tires and tires pressures
²All exterior lights
SPECIAL MAINTENANCE REQUIREMENTS
If bodies built by manufacturers other than
DaimlerChrysler Corporation are fitted to the vehi-
cle, the maintenance requirements and lubrication
intervals specified by the body manufacturer must be
adhered to, in addition to all standard maintenance
requirements.
Brake Fluid
Only use brake fluids approved by the manufac-
turer (DOT 4 plus).
Coolant
Corrosion inhibitor/antifreeze concentration in the
coolant should be checked before the onset of winter
(once year in countries with high prevailing temper-
atures).Replace the coolant every five years or 100,000
miles.
Dust Filter for Heating/Ventilation Replace-
ment
The dust filter and the tailgate interior filter are to
be renewed during routine maintenance service. If
operating conditions are dusty, these filters should be
renewed more frequently.
ENGINE OIL CHANGE AND FILTER REPLACEMENT
At the minimum, change the engine oil and oil fil-
ter once a year ± even if the vehicle mileage per year
is extremely low. For standard oil service schedules
refer to the chapter oil service and maintenance ser-
vice.
Once a Year
Select the viscosity of the engine oil (SAE classes)
according to the outside air temperature.
Only use engine oil approved by DaimlerChrysler
Corporation if following the ASSYST system guide-
lines.
If the fuel used has a sulphur content exceeding
0.05% by weight, the service intervals should be split
in half.
SCOPE OF WORK FOR MAINTENANCE SERVICE
Oil Service
²Engine:
Oil change and filter replacement
Check fluid levels of the following system,
refill as necessary.
²If fluid is lost, trace and eliminate cause ± as a
separate order.
²Power-assisted steering
Lubrication work:
²Trailer tow hitch (original equipment)
Maintenance
²ASSYST maintenance computer reset
Function check
²Signalling system, warning and indicator lamps
²Headlamps, exterior lighting
²Windshield wipers, windshield washer system
Check for leaks and damage.
²Check for abrasion points and ensure that lines
are correctly routed!
²All lines and hoses, sensor cables
²Rubber boots on front axle drive shafts, rubber
boots on front axle suspension ball joints, shock
absorbers
Check fluid levels for the following systems,
correct as necessary.
NOTE: Should there be a loss of fluid which cannot
be explained by regular use, trace and eliminate the
cause.
0 - 8 LUBRICATION & MAINTENANCEVA
MAINTENANCE SCHEDULES (Continued)

ule (ECM) over the Controller Area Network (CAN)
data bus. The low oil level indicator Light Emitting
Diode (LED) is completely controlled by the instru-
ment cluster logic circuit, and that logic will only
allow this indicator to operate when the instrument
cluster detects that the ignition switch is in the On
position. Therefore, the LED will always be off when
the ignition switch is in any position except On. The
LED only illuminates when it is provided a path to
ground by the instrument cluster transistor. The
instrument cluster will turn on the low oil level indi-
cator for the following reasons:
²Bulb Test- Each time the ignition switch is
turned to the On position the low oil level indicator
is illuminated for about two seconds as a bulb test.
²Engine Oil Level Low Message- Once the
engine has been started, each time the cluster
receives a message from the ECM indicating that the
engine oil level is at or near the ªMinimumº mark on
the dipstick, the low oil level indicator is illuminated.
The indicator remains illuminated briefly at first, but
will remain illuminated for longer periods as subse-
quent messages indicate that the oil level has
dropped further. Eventually, the indicator will
remain illuminated solid until the engine oil level is
corrected, or until the ignition switch is turned to the
Off position, whichever occurs first.
The instrument cluster also supplements the oil level
indicator by displaying an engine oil icon along with
alpha-numeric messages in the multi-function indicator
Liquid Crystal Display (LCD) advising the vehicle oper-
ator how much oil is required to correct the engine oil
level, and when the ªMaximumº engine oil level has
been exceeded. See the owner's manual in the vehicle
glove box for more information on this feature.
The ECM continually monitors the engine oil level
and temperature sensor to determine the engine oil
level. The ECM then sends the proper engine oil
level messages to the instrument cluster. If the
instrument cluster turns on the indicator after the
bulb test, even after the engine oil level is sufficient,
it may indicate that the engine or the engine oiling
system requires service. For proper diagnosis of the
engine oil level and temperature sensor, the ECM,
the CAN data bus, or the electronic message inputs
to the instrument cluster that control the low oil
level indicator, a DRBIIItscan tool is required. Refer
to the appropriate diagnostic information.
MAINTENANCE INDICATOR
DESCRIPTION
An Active Service SYSTem (ASSYST) engine oil main-
tenance indicator is optional equipment on all instru-
ment clusters. In vehicles so equipped, a second,dedicated ASSYST microprocessor is integral to the
cluster electronic circuit board. The ASSYST indications
are displayed and can be toggled with the clock indica-
tion on the right side of the multi-function indicator
Liquid Crystal Display (LCD) located near the lower
edge of the instrument cluster, directly below the speed-
ometer. The ASSYST displays include numeric values
combined with several icons to indicate actual engine oil
level, and reminders in time (days) or distance (miles or
kilometers) until the next required engine oil mainte-
nance is anticipated. ASSYST also provides several
audible indications using the electronic tone generator
on the instrument cluster circuit board to supplement
these visual displays.
The indications of the ASSYST engine oil mainte-
nance indicator are not visible when the LCD is not illu-
minated. When illuminated, the ASSYST indications
appear as dark characters and icons silhouetted against
an amber field. When the exterior lighting is turned Off,
the display is illuminated at maximum brightness.
When the exterior lighting is turned On, the display
illumination level can be adjusted in concert with the
cluster general illumination lighting using the ª+º (plus)
and ª2º (minus) multi-function indicator push buttons.
The ASSYST engine oil maintenance indicator is ser-
viced as a unit with the instrument cluster.
OPERATION
The ASSYST engine oil maintenance indicator micro-
processor uses numerous criteria besides time and mile-
age to evaluate vehicle maintenance requirements. Time
data is taken from the electronic digital clock integral to
the instrument cluster. Vehicle distance data is obtained
from the Controller Antilock Brake (CAB) over the Con-
troller Area Network (CAN) data bus. Coolant tempera-
ture, engine oil temperature, engine oil level, engine oil
quality, engine speed, and engine load data are obtained
from the Engine Control Module (ECM) over the CAN
data bus. Using all of the available data and internal
programming, the ASSYST microprocessor then calcu-
lates the estimated time and distance to the next
required engine oil maintenance interval. The ASSYST
uses the multi-function indicator LCD to display that
data and, when necessary, issues audible alerts to the
vehicle operator through the electronic tone generator
on the cluster circuit board.
See the owner's manual in the vehicle glove box for
more information on the features, use, operation and
resetting procedures for the ASSYST maintenance
computer. Proper diagnosis and testing of the
ASSYST engine oil maintenance computer, the CAN
data bus and the electronic data bus message inputs
to the EMIC that are used by the ASSYST computer
for its calculations requires the use of a DRBIIIt
scan tool. Refer to the appropriate diagnostic infor-
mation.
VAINSTRUMENT CLUSTER 8J - 19
LOW OIL LEVEL INDICATOR (Continued)

MALFUNCTION INDICATOR
LAMP (MIL)
DESCRIPTION
A Malfunction Indicator Lamp (MIL) is standard
equipment on all instrument clusters. The MIL is
located near the lower edge of the instrument cluster, to
the right of the multi-function indicator display. The
MIL consists of the International Control and Display
Symbol icon for ªEngineº imprinted within a rectangu-
lar cutout in the opaque layer of the instrument cluster
overlay. The dark outer layer of the overlay prevents
the indicator from being clearly visible when it is not
illuminated. An amber Light Emitting Diode (LED)
behind the cutout in the opaque layer of the overlay
causes the icon to appear silhouetted against an amber
field through the translucent outer layer of the overlay
when the indicator is illuminated from behind by the
LED, which is soldered onto the instrument cluster elec-
tronic circuit board. The MIL is serviced as a unit with
the instrument cluster.
OPERATION
The Malfunction Indicator Lamp (MIL) gives an indi-
cation to the vehicle operator when the Engine Control
Module (ECM) has recorded a Diagnostic Trouble Code
(DTC) for an On-Board Diagnostics II (OBDII) emissions-
related circuit or component malfunction. The MIL is
controlled by a transistor on the instrument cluster cir-
cuit board based upon cluster programming and elec-
tronic messages received by the cluster from the ECM
over the Controller Area Network (CAN) data bus. The
MIL Light Emitting Diode (LED) is completely controlled
by the instrument cluster logic circuit, and that logic will
only allow this indicator to operate when the instrument
cluster detects that the ignition switch is in the On posi-
tion. Therefore, the LED will always be off when the
ignition switch is in any position except On. The LED
only illuminates when it is provided a path to ground by
the instrument cluster transistor. The instrument cluster
will turn on the MIL for the following reasons:
²Bulb Test- Each time the ignition switch is
turned to the On position the MIL is illuminated as a
bulb test. The indicator will remain illuminated until
the engine is started, or until the ignition switch is
turned to the Off position, whichever occurs first.
²MIL Lamp-On Message- Each time the clus-
ter receives a MIL lamp-on message from the ECM,
the indicator will be illuminated. The indicator will
remain illuminated until the detected fault is
repaired, or until the ignition switch is turned to the
Off position, whichever occurs first. For more infor-
mation on the ECM and the DTC set and reset
parameters, (Refer to 25 - EMISSIONS CONTROL -
OPERATION).²Communication Error- If the cluster receives
no lamp-on or lamp-off message from the ECM, the
MIL is illuminated by the instrument cluster. The
indicator remains controlled and illuminated by the
cluster until a valid lamp-on or lamp-off message is
received from the ECM.
The ECM continually monitors the fuel and emis-
sions system circuits and sensors to decide whether
the system is in good operating condition. The ECM
then sends the proper lamp-on or lamp-off messages
to the instrument cluster. If the instrument cluster
turns on the MIL after the bulb test, it may indicate
that a malfunction has occurred and that the fuel
and emissions systems may require service. For
proper diagnosis of the fuel and emissions systems,
the ECM, the CAN data bus, or the electronic mes-
sage inputs to the instrument cluster that control the
MIL, a DRBIIItscan tool is required. Refer to the
appropriate diagnostic information.
MULTI-FUNCTION INDICATOR
DESCRIPTION
A multi-function indicator is standard equipment on
all instrument clusters. The multi-function indicator is
located near the lower edge of the instrument cluster,
directly below the speedometer. The multi-function indi-
cator consists of a Liquid Crystal Display (LCD) unit
and four push button-controlled switches that are sol-
dered onto the instrument cluster electronic circuit
board. The LCD is visible through a large rectangular
cutout in the instrument cluster overlay, while the four
switch push buttons extend through a black plastic
switch bezel located on the cluster lens directly below
the LCD. The four multi-function indicator push buttons
allow the vehicle operator to configure and adjust sev-
eral of the display features. The buttons are labeled
from left to right: ªmiº (miles) or ªkmº (kilometers), an
icon depicting an analog clock face (clock), ª2º (minus),
and ª+º (plus).
The multi-function indicator LCD displays both
alpha-numeric characters and numerous icons to pro-
vide information to the vehicle operator. The indications
of the multi-function indicator are not visible when the
LCD is not illuminated. When illuminated the indica-
tions appear as dark characters and icons silhouetted
against an amber field. When the exterior lighting is
turned Off, the display is illuminated at maximum
brightness. When the exterior lighting is turned On the
display illumination level can be adjusted in concert
with the cluster general illumination lighting using the
ª+º (plus) and ª2º (minus) multi-function indicator push
buttons. The multi-function indicator LCD unit and
push button switches are serviced as a unit with the
instrument cluster.
8J - 20 INSTRUMENT CLUSTERVA

(6) Remove pressed - out oil pump chain pin from
chain seperation tool.
CAUTION: IT IS ESSENTIAL that the installation pro-
cedure for the oil pump chain is followed exactly.
Failure to do so will result in severe engine dam-
age.
INSTALLATION
INSTALLATION
NOTE: If the oil pump is dry, fill it with clean engine
oil before installation. Clean the oil pick±up tube
and strainer.
(1) Clean all sealing surfaces.
(2) Position the oil pump onto the drive chain and
reset tensioner.
(3) Install oil pump retaining bolts and tighten to
18 N´m (160 lbs. in.).
(4) Install the oil pan (Refer to 9 - ENGINE/LU-
BRICATION/OIL PUMP - INSTALLATION).
(5) Refill the crankcase to the appropriate level
with the proper engine oil (see owners manual).
WARNING: USE EXTREME CAUTION WHEN THE
ENGINE IS OPERATING. DO NOT PUT YOURHANDS NEAR THE PULLEYS, BELTS OR FAN. DO
NOT WEAR LOOSE CLOTHES.
(6) Start the vehicle and inspect for leaks.
INSTALLATION - OIL PUMP CHAIN
CAUTION: IT IS ESSENTIAL that the installation pro-
cedure is followed exactly. Failure to do so will
result in severe engine damage.
(1) Connect old oil pump chain and new chain with
temporary link, outer plate and locking element (Fig.
55).
(2) Slowly rotate crankshaft in a clockwise direc-
tion until it is possible to connect the ends of the new
and old oil pump chains.
(3) Remove assembly locking element, outer plate
and assembly link (Fig. 56).
CAUTION: Insert new riveted link from the rear.
(4) Connect ends of new oil pump chain with new
riveted link (Fig. 57).
NOTE: When assembling riveting tool, one piece is
secured by a screw and the other can move loosely
on the thrust spindle.
Fig. 54 OIL PUMP CHAIN LINK REMOVAL
1 - VIBRATION DAMPER/PULLEY
2 - OIL PUMP CHAIN
3 - SPECIAL TOOL #8948
Fig. 55 INSTALLING OIL PUMP CHAIN TEMPORARY
LINK
1 - VIBRATION DAMPER/CRANKSHAFT PULLEY
2 - OLD OIL PUMP CHAIN
3 - NEW OIL PUMP CHAIN
4 - TEMPORARY LINK
9 - 54 ENGINEVA
OIL PUMP (Continued)