2005 Lexus GX 470 Owners Manual - Page 506

DRIVING TIPS D Because of the added load of the trailer, your vehicle's engine may overheat on hot days (at temperatures over 30_C [85_F]) when going up a long or steep grade with a trailer. If the engine coolant temperature gauge indicates overheating, immediately turn off the air conditioning (if in use), pull your vehicle off the road and stop in a safe spot. See "If your vehicle overheats" on page 496. D Always place wheel blocks under both the vehicle and trailer wheels when parking. Apply the parking brake firmly. Put the transmission in "P". Avoid parking on a slope with a trailer, but if it cannot be avoided, do so only after performing the following: 1. Apply the brakes and keep them applied. 2. Have someone place wheel blocks under both the vehicle and trailer wheels. 3. When the wheel blocks are in place, release your brakes slowly until the blocks absorb the load. 4. Apply the parking brake firmly. 5. Shift into "P" and turn off the engine. When restarting out after parking on a slope: 1. With the transmission in "P" position, start the engine. Be sure to keep the brake pedal depressed. 2. Shift into the "3", "2", "L" or "R" position. 3. Release the parking brake and brake pedal and slowly pull or back away from the wheel blocks. Stop and apply your brakes. 4. Have someone retrieve the blocks. CAUTION D Do not exceed 72 km/h (45 mph) or the posted towing speed limit, whichever is lower. Because instability (swaying) of a towing vehicle-trailer combination usually increases as the speed increases, exceeding 72 km/h (45 mph) may cause loss of control. D Slow down and downshift before descending steep or long downhill grades. Do not make sudden downshifts. D Avoid holding the brake pedal down too long or too frequently. This could cause the brakes to overheat and result in reduced braking efficiency. 481