1993 Cadillac DeVille Owner's Manual - Page 132

EnglishIMetric Button (Digital Option) You can go back and forth from English (miles) to metric (kilometers) by pushing this button. __ The same button also makes other readings (like temperature, fuel and odometer) go between English and metric. Trip Odometer You can tell how far you've gone since you last set it back to zero. To reset, justpush the button. . If you have the Digital speedometer and odometer,there's one special thing to know. You may see the trip odometer get about 621 miles and to then return to zero. Here's why: If you have the system on Metric and you set the odometerback to zero,it will turn back to zero again after you've driven 999.9 km (621 miles). If you have changed to English during that trip, it will still roll back to zero at 999.9 km (621 miles). To make the odometer go all the way to 999.9 miles (1609 km), set it to zero when it is in English mode, showing miles.