Hyundai 2001 Tiburon Owner's Manual page 88

CAUTION:
If overheating should occur when towing,
(the temperature gauge reads near red zone),
taking the following action may reduce or
eliminate the problem.
1. Turn off the air conditioner.
2. Reduce highway speed.
3. Select a lower gear when going uphill.
4. While in stop and go traffic, place the gear
selection in park or neutral and idle the
engine at a higher speed.
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DRIVING YOUR HYUNDAI