300SD (140.134) L6-3.5L DSL Turbo (603.971) (1993)
^
"Smog" readout (a, Figure 2) in push-button display inactive (switched off)
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Refrigerant fill level check: active
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Auxiliary fan (M4): active
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Blower motor speed level bar display (not displayed in [auto] mode).
D.
VERSION CODING USING THE HAND-HELD TESTER (HHT)