2005 Dodge Magnum Owner's Manual - Page 252

252 STARTING AND OPERATING • The "D" range can be selected when towing. However, if frequent shifting occurs while in this range, the "3" range must be selected. NOTE: Using the "3" range while operating the vehicle under heavy operating conditions will improve performance and extend transmission life by reducing excessive shifting and heat build up. • When towing a trailer greater than 2000 lbs. (907 kg) you should carry a full-size wheel and tire as a spare in the event of a flat. If the compact spare tire is used it may adversely affect vehicle handling. • Whenever you pull a trailer, regardless of the trailer size, stop lights and turn signals on the trailer are recommended for motoring safety. • The automatic transmission fluid and filter should be changed if you REGULARLY tow a trailer for more than 45 minutes of continuous operation. See Schedule "B" in section 8 of this manual for transmission fluid change intervals. NOTE: • For vehicles equipped with Autostick. By using the Autostick modes, and selecting a specific gear range, frequent shifting can be avoided. The highest gear range should be selected that allows for adequate performance. For example, choose "4" if the desired speed can be maintained. Choose "3" or "2" if needed to maintain the desired speed. WARNING! Connecting trailer brakes to your vehicle's hydraulic brake lines can overload your brake system and cause it to fail. You might not have brakes when you need them and could have an accident. • Do not attempt to tow a trailer while using a compact spare tire, except for emergency use only. Do not exceed 50 mph (80km/h), and repair the damaged tire immediately.