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Home >> Mercedes Benz >> 1993 >> 500SEL >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Self-Diagnostic System >> Pretest Conditions

Pretest Conditions

Start and run engine until engine oil temperature is 176°F (80°C). Turn air conditioning off. Ensure shift lever is in Park. Check all fuses and replace as necessary. Verify battery voltage is 11-14 volts.

NOTE: For component locations, see the THEORY/OPERATION article in the ENGINE PERFORMANCE Section.
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