170
Model Code Page
37. Autocontrol 5.2 (K41107---)
1. 9. 2002
371 12A
6250--8950
1. 8. 2000
E. Setting 4WD automatics (AC 5.2 only)
In the setting mode there is point U, in which can be se-
lected either automatic function on or off (on=1, off=0).
When the 4WD automatics is on (on=1), the 4WD is en-
gaged for a moment in the drive direction change/start,
which reduces wheel slip on a slippery ground. After the
drive direction change/start the 4WD is disengaged auto-
matically.
This function can be switched off by selecting 0 in the set-
ting mode menu in point U (0=off). Selection is made nor-
mally with the DPS push buttons and the selection is con-
firmed with the DPS pre---programming button.
F. Resetting pre---filling i ndexes for DPS
clutches
If in connection with DPS gear change there occurs a “double
jerk” or traction disengages for a while, check/set the DPS
clutch pre ---filling indexes.
However,firstmustbesetautomatically initial pressure in-
dexesforDPSclutchesC1andC2(seepage371/11).
Set all DPS pre---filling indexes first to 0 (index nos 7, 8 and 9).
Also set clutch C3 initial pressure index to 0 (index no. 12),
since the automati c calibration does not do this.
Check the function of the DPS.
--- If in the beginning of the gear change there is the “double
jerk”, decrease the pre ---filling index of the clutch in question
to ---2 and check the function after that. Decrease the index
value more, if needed. Particularly in the gear change be-
tween speeds 1 > 2 there can easily be a double jerk, if the
indexes are incorrectly set.
--- If the traction disengages for a while during speed change,
increase the pre---filling index of the clutch in question to e.g.
+2 and check the function. Increase more, if necessary.
Sometimes the initial pressure indexes must be adjusted.
--- If speed change between 1 > 2 is bad, set clutch C3 in-
dexes.
--- If speed change between 2 > 3 is bad, set clutch C2 in-
dexes.
--- If speed change between 3 > 2 is bad, set clutch C1 in-
dexes.
--- If speed change between 2 > 1 is bad, set clutch C2 in-
dexes.
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