Front brakes engaged while driving

Shift motor on the transfer case, 4X4 control module, vacuum to vac solenoid. Did you hook up a scan tool an check for codes?

The electronic shift on the fly (ESOF) system is an electronic shift system that allows the operator to choose between 2 different 4-wheel drive modes as well as 2-wheel drive. The operator can switch between 2WD and 4H mode at speeds up to 88 km/h (55 mph). To engage or disengage 4L range, the vehicle speed must be less than 5 km/h (3 mph), the brake pedal pressed and the transmission must be in NEUTRAL (or the clutch pedal pressed in manual transmission vehicles).
When the mode select switch (MSS) on the instrument panel is turned, the 4WD control module (PCM) activates the electromagnetic clutch and powers the transfer case shift motor. When the shift motor reaches the desired position, as determined by the contact plate position inputs to the 4WD control module (PCM), power to the shift motor will be removed. When the transfer case front and rear output shafts are synchronized, the spring loaded lockup collar mechanically engages the mainshaft hub to the drive sprocket. Finally, the front axle integrated wheel ends (IWEs) are engaged and the electromagnetic clutch is deactivated.

Feature Inputs:
• Mode select switch (MSS)
• Wheel speeds (via CAN communication)
• Contact plate position inputs A, B, C, D (grounded when closed, open circuit when open)
• Transmission neutral
• Brake ON/OFF (BOO)

Feature Outputs:
• Transfer case synchronization clutch
• Transfer case shift motor relays
• Integrated wheel-end (IWE) vacuum solenoid
• Instrument cluster indicators (via CAN communication)
• 4WD mode (via CAN communication to PCM)

Does yours have Electronic Shift on the Fly (ESOF) Operation The electronic shift on the fly (ESOF) system is an electronic shift 4x4 system that allows the operator to choose between two different 4x4 modes as well as 2-wheel drive. The operator can switch between 2WD and 4H mode at speeds up to 88 km/h (55 mph). To engage or disengage 4L range, the vehicle speed must be less than 5 km/h (3 mph), the brake pedal depressed, and the transmission must be in NEUTRAL. The transfer case is equipped with an electromagnetic clutch which is located inside the case. This clutch is used to spin up the front driveline when shifting from 2WD to 4H mode at speed. When the control switch on the instrument panel is turned, the generic electronic module (GEM) recognizes that a shift has been requested and activates the electromagnetic clutch and the relays which power the transfer case shift motor. When the shift motor reaches the desired position, as determined by the contact plate position inputs to the GEM, power to the shift relays and motors will be removed. When the transfer case front and rear output shafts are synchronized, the spring loaded lockup collar mechanically engages the mainshaft hub to the drive sprocket. Finally, the front axle collar is engaged and the electromagnetic clutch is deactivated.

After reading this material I would not think it was the switch . Maybe an input problem to the GEM module .

Feature Inputs:

• 4WD Mode Switch (various resistances; go to Table 1).
• Contact Plate Position Inputs A, B, C, D (grounded when closed, open circuit when open; go to Table 4).
• Output Speed Shaft (OSS) Sensor (Sinusoid Signal: 0.7V-20V, 2.2 Hz/mph).
• Brake Input (battery voltage when brake is depressed, open circuit when not activated).
• Transmission Range Sensor (grounded when transmission is in NEUTRAL, open circuit otherwise).
• Start/Clutch Depressed Input (go to Table 3).
• I would take it and have it check for codes !

if this has anti-lock brakes it may be the HCU(hydraulic control unit) may have air in it. it may have to be activated to get all the air out.

Check all wheel sensors for broken wires, loose connectors or position of sensors in their mounting brackets.

Before jacking the wheels off the ground, use an appropriate socket with a solid drive size (1/2 inch drive usually works) ratchet or drive handle, and bang it with a sizable rubber mallet to loosen the lugs. In extreme situations, penetrating oil or WD-40 can be applied and let set for a few minutes before trying...

Cruise controls can cease to engage if the clutch or brake light cruise switch are out of adjustment. If this happens, try placing you foot under the clutch pedal (if equipped) and lift up on it (toward you) and hold it while engaging the cruise. If it now works, it will likely cut out when you remove your foot from under the pedal. Check the brake pedal in an identical fashion. Adjusting the switch at the pedals can often solve he problem. Some vehicles (Honda, Acura, Ford, to name a few) have a plastic insert that mounts in the pedal arm which presses against the switch. These can become brittle and fracture into pieces. My Acura has little pieces of blue plastic on the floorboard around the brake pedal one afternoon and I noticed the cruise didn't work. It was the pieces of the insert that had come to pieces preventing the cruise from coming on. I replaced the insert and no more problem with the cruise.

I'm assuming you're talking about an automatic transmission. When you press on the brake pedal, you engage a switch under the pedal which turns your brake lights on, and also engages a solenoid in the shifter which allows you to shift the car out of Park.

That said, are your brake lights working? If your brake lights come on when you press the brake pedal, chances are the shifter solenoid/actuator is broken. If your brake lights DO NOT come on when you press the brake pedal, chances are you have a faulty brake light switch.

Regardless which part is to blame, these are pretty simple and inexpensive repairs.

Good luck, and if this helped, please rate my answer!

u need to replace the brake light switch down on the brake padel it runs an interlock system

you need a chassis scan tool to read abs code & read date when stopping when this happens needs new frt sensor

I UPGRADE IT MY TL NON TYPE S ...TO THE O.E BREMBO KIT....TOGETHER WITH THE ROTORS AND BRAND NEW ABS SENSORS.......WHY IS THE ABS ,VSA, ABD BRAKE LIGHT ON??MY ACURA IS