OMAL161979: 6020, 6120, 6220, 6320, 6420 and 6420S Tractors(398791- ), Block File: OU12401_0001164_19

AutoPowr - Cold Weather Starting

To avoid damaging the sub-assemblies at temperatures below freezing point, an automatic function prevents the drive system from engaging too early. Once the engine has started, diganostic trouble code UIC 305057.01 (INFORMATION FOR OPERATOR: Transmission Warm-up Routine is Active) is displayed.

The warm-up routine can only be started if the reverse drive lever is in the "corner park" position. If the reverse drive lever is in any position other than corner park, code UIC 305058.01 (INFORMATION FOR OPERATOR: Transmission Warm-up Routine Cannot be Activated, Park Lock should be Engaged) is displayed.

The time required for the transmission to warm up will vary depending on temperature:

Temperature range	Warm-up time
above -7° C (19.4° F)	none
between -8° C (17.6° F) and -15° C (5° F)	96 sec
between -16° C (3.2° F) and -20° C (-4° F)	156 sec
between -21° C (-5.8° F) and -30° C (-22° F)	246 sec

At temperatures below -30° C (-22° F) only the transmission input shaft is turned. The warm-up routine starts as soon as the transmission oil temperature has reached -30° C (-22° F).

NOTE: The engine speed may rise up to 1500 rpm during the warm-up routine.

OU12401,0001164 -19-13DEC04-1/1