Ford 2003 Explorer Owner's Manual page 177

Driving
4x4 w/automatic transmission
GCWR (Gross Combined Weight Rating)/Trailer Weight
Engine Rear axle ratio Maximum
4.0L SOHC/4.6L* 3.55
4.0L SOHC 3.73 LS
w/Class III
Trailer Tow
Package
4.6L* 3.73/3.73 LS
Notes: - For high altitude operation, reduce GCW by 2% per 300
meters (1000 ft) elevation. For definitions of terms used in this table
and instructions on how to calculate your vehicle load, refer to Vehicle
loading in this chapter. Maximum trailer weights shown. The
combined weight of the completed towing vehicle and the loaded
trailer must not exceed the GCWR.
*-When towing maximum loads under high outside temperatures and/or
on steep grades, the A/C system may cycle on and off to protect the
engine from overheating. This may result in a temporary increase of
interior temperatures.
Towing a trailer over 1588 kg (3500 lbs.) requires a weight distributing
hitch.
Preparing to tow
Use the proper equipment for towing a trailer and make sure it is
properly attached to your vehicle. See your dealer or a reliable trailer
dealer if you require assistance.
Hitches
Do not use hitches that clamp onto the vehicle bumper. Use a load
carrying hitch. You must distribute the load in your trailer so that
10–15% of the total weight of the trailer is on the tongue.
176
2003 Explorer (exp)
Owners Guide (post-2002-fmt)
USA English (fus)
Trailer weight
GCWR-kg range-kg (lbs.)
(lbs.) (0-Maximum)
3493 (7700) 0-1542 (0-3400)
4536 (10000) 0-2440 (0-5380)
5262 (11600) 0-3166 (0-6980)