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Four-Wheel Drive (If Equipped)4L (4X4 LOW)E1669312H (4X2)For general on-road driving. Sends powerto the rear wheels only and should be usedfor street and highway driving. Providesoptimal smoothness and fuel economy athigh speeds.4A (4X4 AUTO)Provides electronic control four-wheeldrive with power delivered to the front andrear wheels, as required, for increasedtraction. This is appropriate for all on-roaddriving conditions, including as dry roadsurfaces, but is especially useful on wetpavement, snow, dirt, or gravel.4H (4X4 HIGH)Used for extra traction such as in snow oricy roads or in off road situations. Thismode is not intended for use on drypavement.Note: Do not use 4H (4X4 HIGH) on dry,hard surfaced roads. Doing so can produceexcessive noise and increased tire wear. 4H(4X4 HIGH) is only intended for consistentlyslippery or loose surfaces.Uses extra gearing to provide maximumpower to all four wheels at reducedspeeds. Intended only for off-roadapplications such as deep sand, steepgrades, or pulling heavy objects. 4L (4x4low) will not engage while the vehicle ismoving above 3 mph (5 km/h); this isnormal and should be no reason forconcern. Refer to Shifting to or from 4L(4x4 low) for proper operation.Shifting between system modesNote: Momentarily releasing the acceleratorpedal while performing a shift will improveengagement/disengagement times.Note: Do not perform this operation if therear wheels are slipping.Note: Some noise may be heard as thesystem shifts or engages; this is normal.Note: 4X4 high mode is not intended foruse on dry pavement.You can move the control from 2H to 4Aor 4H at a stop or while driving. Theinformation display may display a messageindicating a 4X4 shift is in progress. Oncethe shift is complete the message centerwill then display the system modeselected.Shifting to or from 4L (4X4 low)Note: Some noise may be heard as thesystem shifts or engages; this is normal.Note: 4x4 low mode is not intended for useon dry pavement.1. Bring the vehicle to a speed of 3 mph(5 km/h) or less.2. Place the transmission in N (Neutral).3. Move the 4WD control to the desiredposition.155F150 (TF6) , enUSA