Page 451 of 666
449 Practical hints
What to do if ...
5
The key can no longer be turned in the ignition
lock.
The on-board voltage is too low.
\1Remove the key and re-insert it into the
ignition lock.
\1Switch off all non-essential consumers,
for example the seat heating, interior
lighting, and try to turn the key again.
If this does not work:
\1Check the starter battery and charge it
if necessary.
or
\1The engine may be jump-started
(\2page 581).
or
\1Consult an authorized Sprinter
Dealer.
Problem
Possible cause / result
Suggested solutions
nf_BA.book Page 449 Friday, January 25, 2008 3:53 PM
Page 456 of 666

454 Practical hintsWhat to do if ...
5
Problem
Possible cause / result
Suggested solutions
The battery check lamp on the remote control
for the auxiliary heating does not light up
briefly when a button is pressed.
The remote control batteries are discharged.
\1Change the remote control batteries
(\2page 541).
The auxiliary heating does not switch on or the
engine does not start.
Lack of fuel.
The fuel tank is less than a quarter full. The aux-
iliary heating switches off automatically.
\1Refuel at the nearest refueling station.
\1Then start the auxiliary heating repeat-
edly until the fuel lines are full.
The undervoltage protection circuit integrated
in the control unit switches off the auxiliary
heating because the on-board voltage is less
than 10 V.
\1If necessary, have the alternator and
the battery checked.
The fuse has blown.
\1Replace the fuse (\2page 589).
\1Have the cause of the blown fuse
checked at an authorized Sprinter Deal-
er.
nf_BA.book Page 454 Friday, January 25, 2008 3:53 PM
Page 457 of 666
455 Practical hints
What to do if ...
5
The auxiliary heating does not switch on or the
engine does not start
WARNING
G
The auxiliary heating has overheated about ten
times in succession.
The engine or heater is malfunctioning.
\1Have the auxiliary heating checked at
an authorized Sprinter Dealer.
The heater has overheated.
The coolant level is too low.
\1Check the coolant level and add coolant
if necessary (\2page 329).
Problem
Possible cause / result
Suggested solutions
nf_BA.book Page 455 Friday, January 25, 2008 3:53 PM
Page 464 of 666

462 Practical hintsWhat to do if ...
5
#
-
k
6
The yellow ESP
®, ABS-, ASR/BAS
indicator lamps and the red brake
system indicator lamp are lit while
the engine is running.
WAR NING
G
EBV has malfunctioned.
The rear wheels could lock up sooner than ex-
pected when you apply the brakes.
\1Also observe the messages in the dis-
play on vehicles with steering wheel
buttons (\2page 489).
\1Continue driving, but with even greater
care.
\1Have the system checked at an autho-
rized Sprinter Dealer as soon as possi-
ble.
#
-
k
6
The yellow ESP
®, ABS, ASR/BAS
indicator lamps and the red brake
system indicator lamp are lit while
the engine is running.
WAR NING
G
EBV has been deactivated due to undervoltage.
The battery may not be being charged.
The rear wheels could lock up sooner than ex-
pected when you apply the brakes.
\1Also observe the messages in the dis-
play on vehicles with steering wheel
buttons (\2page 489).
\1S t o p y o u r v e h i c l e a s s o o n a s i t i s s a f e t o
do so.
\1Do not drive any further.
\1Consult an authorized Sprinter Dealer.
Problem
Possible cause / result
Suggested solutions
nf_BA.book Page 462 Friday, January 25, 2008 3:53 PM
Page 467 of 666

465 Practical hints
What to do if ...
5
Problem
Possible cause / result
Suggested solutions
k The yellow ASR / BAS indica-
tor lamp is lit while the en-
gine is running.
WARNING
G
ASR has been deactivated due to a malfunction.
The engine power output may then be lower.
\1Continue driving, but with even greater
care.
\1Have the system checked at an autho-
rized Sprinter Dealer as soon as possi-
ble.
WARNING
G
BAS has been deactivated due to a malfunction.
The brake system continues to function with the nor-
mal braking effect but with no electronic support.
\1Continue driving, but with even greater
care.
\1Have the system checked at an autho-
rized Sprinter Dealer as soon as possi-
ble.
ASR and BAS have been switched off due to under-
voltage.
The battery may not be being charged.
The brake system is still available with the normal
braking effect.
\1Continue driving, but with even greater
care.
\1Have the system checked at an autho-
rized Sprinter Dealer as soon as possi-
ble.
nf_BA.book Page 465 Friday, January 25, 2008 3:53 PM
Page 468 of 666

466 Practical hintsWhat to do if ...
5
-
The yellow ABS indicator
lamp is lit while the engine is
running.
WA RNING
G
ABS has been deactivated due to a malfunction.
ESP
®, ASR and BAS as well as cruise control have
also been deactivated as a result.
The brake system continues to function with the nor-
mal braking effect but with no electronic support.
The wheels could therefore lock up, for example if
the brakes are applied with maximum force.
\1Also observe the messages in the dis-
play on vehicles with steering wheel
buttons (\2page 489).
\1Continue driving, but with even greater
care.
\1Have the system checked at an autho-
rized Sprinter Dealer as soon as possi-
ble.
WA RNING
G
ABS is temporarily unavailable.
Self diagnosis may not have been completed yet.
The brake system is still available with the normal
braking effect.
\1Drive on for a distance of more than
13 mph (20 km / h).
ABS is available again if the message
goes out.
Problem
Possible cause / result
Suggested solutions
nf_BA.book Page 466 Friday, January 25, 2008 3:53 PM
Page 470 of 666
468 Practical hintsWhat to do if ...
5
#
The yellow ESP
® indicator
lamp is lit while the engine is
running.
WA RNING
G
ESP
® has been deactivated due to a malfunction.
Cruise control is also switched off as a result.
Vehicle stability is no longer automatically controlled
in good time.
Engine power output may be reduced.
\1Also observe the messages in the dis-
play on vehicles with steering wheel
buttons (\2page 489).
\1Continue driving, but with even greater
care.
\1Have the system checked at an autho-
rized Sprinter Dealer as soon as possi-
ble.
ESP
® has been deactivated due to undervoltage.
The battery may not be being charged.
Vehicle stability is no longer automatically controlled
in good time.
Engine power output may be reduced.
\1Continue driving, but with even greater
care.
\1Have the system checked at an autho-
rized Sprinter Dealer as soon as possi-
ble.
Problem
Possible cause / result
Suggested solutions
nf_BA.book Page 468 Friday, January 25, 2008 3:53 PM
Page 471 of 666
469 Practical hints
What to do if ...
5
1
The red SRS warning lamp
does not go out after ap-
proximately 4 seconds after
the ignition system is
switched on or lights up
again.
WARNING
G
The restraint systems have malfunctioned. The air-
bags or emergency tensioning retractors could be
triggered unintentionally, or not at all in the event of
an accident.
\1Drive on with even greater care to an
authorized Sprinter Dealer.
#
The red battery charge
warning lamp lights up while
the engine is running.
WARNING
G
The battery is not being charged. Possible causes:
\4malfunctioning alternator
\4torn poly-V-belt
\1Stop immediately and check the poly-V-
belt.
If it is torn:
\1Do not drive any further. Consult
the nearest authorized Sprinter
Dealer.
If it is not damaged:
\1Have your vehicle checked at an au-
thorized Sprinter Dealer.
Problem
Possible cause / result
Suggested solutions
nf_BA.book Page 469 Friday, January 25, 2008 3:53 PM