FORD 2013 Flex v.2 - Manual (Page 265)

If you tow your vehicle with all four wheels on the ground:
• Tow only in the forward direction.
• Release the parking brake.
• Place the transmission in N (Neutral).
• Do not exceed 65 mph (105 km/h).
• Start the engine and allow it to run for five minutes at the beginning
of each day and every six hours thereafter. With the engine running
and your foot on the brake, shift into D (Drive) and then into R
(Reverse) before shifting back into N (Neutral).
Towing 265
2013 Flex (471)
Owners Guide gf, 2nd Printing
USA (fus)