S 600 Coupe (140.076) V12-6.0L (120.982) (1997)
NOTE: In order to avoid erroneous measurements it is necessary to actuate the switch on the trunk lock with the trunk lid open or, if switch is not
present as of approx. 1/95, remove the trunk illumination bulbs on the left and right.
Test step 1
NOTE: Pay attention to Information Update!
Check circuits listed in Information Update first.
Fuse
remove.
NOTE: Remove fuses for anti-theft warning system only with vehicle unlocked (alarm signal).
NOTE: Remove fuses for auto pilot system last!
Quiescent current
read off on multimeter (2) connected to battery and compare with value noted.
If total quiescent current drops by < 0.02 A (20 mA):
Fuse
reinsert.
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Perform test in same manner with all fuses in fuse boxes and in base module. Wait 5 seconds between each test.
NOTE: After inserting a fuse the quiescent current for the connected components may be higher briefly. For the radio this may be as much as
0.240 A (240 mA).
This high quiescent current consumption can be eliminated by switching the radio on and off again.
NOTE: After inserting the fuses for the auto pilot system (APS) the quiescent current increases by approx. 600 mA; a waiting time of approx. 30
minutes must then be observed.
If no fault is found when performing these tests, See: Testing and Inspection/Determining Source of Increased Quiescent Current/Unfused
Components
If total quiescent current drops by more than 0.02 A (20 mA):
Replace the component listed in the Information Update or See: Testing and Inspection/Determining Source of Increased Quiescent Current/Fused
Components
NOTE: After replacing the component listed in the Information Update, check total quiescent current consumption again (section A).
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On vehicles with anti-theft warning system unlock engine hood lock on right.
If the total quiescent current increases to > 0.02 A (20 mA):
Cause is current returning through another current path. Perform test step 2.
Test step 2