My ignition switch on my 1999 ford E-150 van is stuck in the lock position. How do I replace the lock assembly on this vehicle

Ford Falcon (BA)<< real name.
produced by Ford Australia from 2002 to 2005. no engine told of 5. non turbo right?
no vin told
no country told (down under?) we dont do cars down under.
no year car told
A/T box failures.vary by all that.
4-speed automatic BTR
guess 4.0L engine with ?????
M93LE box???? if yes, it must be OBD2 scanned. generic, last shifts are caused by.
reverse works ok
Low works ok, PRNDL
only Drive fails. and is only 3>4 shift (late and harsh)
causes are bad shift solenoid,
VSS errors
there is no Governor , the TCM does the shifting based on engine load and RPM and VSS sensors. so of engine fails, it will not go to 4th gear. correctly or late..
or if tranny has a TV cable if present.bad. rusted and stuck out.

you failed to scan the PCM/TCM
using a OBD2 scan tool. but Australia is 2006 up compliance.,
no year car told at all making any exact answer super hard.
but here is a try. lacking OBD2 port only OBD1 tools work.
I guess
Falcon (Aust.) BA 2002-05V6, 4.0L BTR M93LE
bad accumulator inside box, causing harsh shifts
sticking solenoid. to 4th release 3 fails then works4. BANG
seems the TCM is confused. if 2 boxes fail.
TCM must be scanned as the service manual directs.

Most if not all vehicles have a Electronic Park Lock (EPL)/Ignition Lock Cylinder Control Actuator: If the vehicle is equipped with automatic transmission and a floor mounted console gear shift, it has an ignition lock cylinder control actuator system in the steering column. The ignition lock cylinder control actuator purpose is to prevent the ignition key from being turned to the OFF position when the transmission is in any position other than PARK and the vehicle may still be moving. The column ignition lock system consists of an ignition lock cylinder control actuator, and a park position switch that is located in the automatic transmission shift lock control switch. The ignition lock cylinder control actuator contains a pin that is spring loaded to mechanically prevent the ignition key cylinder from being turned to the lock position when the vehicle transmission is not in the PARK position. If vehicle power is lost, and/or the transmission is not in the PARK position the operator will not be able to turn the ignition key to the lock position and will not be able to remove the ignition key from the column. Or it has
Linear Shift Assembly: If the vehicle is equipped with a column mounted gear shift, it has a linear shift assembly on the steering column. The linear shift assembly has a cable that runs from the linear shift assembly to the ignition lock cylinder case. The purpose of this cable is to prevent the ignition key from being turned to the OFF position when the transmission is in gear and the vehicle may still be moving. The linear shift assembly cable contains a pin that is spring loaded to mechanically prevent the ignition key cylinder from being turned to the lock position when the vehicle transmission is not in the PARK position. If vehicle power is lost, and/or the transmission is not in the PARK position the operator will not be able to turn the ignition key to the lock position and will not be able to remove the ignition key from the column.
Your best bet is to take it to a ASE certified repair shop or the dealer ! The fix involves taking the steering column apart an or the floor shifter assembly ! Also electrical test to determine what is the problem !
Your

Your key is stuck ? It won't move , it won't come out of the lock cylinder ? Can you shift it from park to drive , neutral etc... Are there any lights lit on the dash , yellow wrench light , service vehicle soon light ? any messages on Driver Information Center ? Your Cadillac has numerous electronic features controlled by modules - computers ! If your not familiar with electronics an these things I suggest you take it to someone who is . Does you Cadillac have console fool shifter ?
Electronic Park Lock (EPL)/Ignition Lock Cylinder Control Actuator: If the vehicle is equipped with automatic transmission and a floor mounted console gear shift, it has an ignition lock cylinder control actuator system in the steering column. The ignition lock cylinder control actuator purpose is to prevent the ignition key from being turned to the OFF position when the transmission is in any position other than PARK and the vehicle may still be moving. The column ignition lock system consists of an ignition lock cylinder control actuator, and a park position switch that is located in the automatic transmission shift lock control switch. The ignition lock cylinder control actuator contains a pin that is spring loaded to mechanically prevent the ignition key cylinder from being turned to the lock position when the vehicle transmission is not in the PARK position. If vehicle power is lost, and/or the transmission is not in the PARK position the operator will not be able to turn the ignition key to the lock position and will not be able to remove the ignition key from the column.
Linear Shift Assembly: If the vehicle is equipped with a column mounted gear shift, it has a linear shift assembly on the steering column. The linear shift assembly has a cable that runs from the linear shift assembly to the ignition lock cylinder case. The purpose of this cable is to prevent the ignition key from being turned to the OFF position when the transmission is in gear and the vehicle may still be moving. The linear shift assembly cable contains a pin that is spring loaded to mechanically prevent the ignition key cylinder from being turned to the lock position when the vehicle transmission is not in the PARK position. If vehicle power is lost, and/or the transmission is not in the PARK position the operator will not be able to turn the ignition key to the lock position and will not be able to remove the ignition key from the column.
The windows are no exception , they are controlled by modules in each door an are connected by a serial data communication bus !
The vehicle is equipped with power windows controlled by the door modules. Each passenger door window can be operated, either from a power window switch built into the driver door switch assembly (DDSA) , or, from a power window switch mounted locally on its associated door. The driver door window can be operated only from the driver door power window switch built into the DDSA.
When the driver door module (DDM) receives a driver door window switch request from the DDSA, the DDM examines the request and inspects to see if it has received any messages from any of the other vehicle modules prohibiting the movement. If no prohibitive messages have been received, the DDM then applies power and ground to the driver door window motor to move the window as requested.
When a passenger door module, passenger front door module (PDM), LH rear door module (LRDM), or RH rear door module (RRDM), receives a window switch request from, either the DDSA or the window switch mounted locally to its door, the passenger door module examines the request and inspects to see if it has received any messages from any of the other vehicle modules prohibiting the movement. If no prohibitive messages have been received, the passenger door module then applies power and ground to its associated window motor to move the window as requested.

Do you have floor console shifter ?
Shift Interlock System A brake/shifter interlock system consists of the following:

• ignition switch (11572)
• brake pedal stoplight switch (13480)
• brake shift interlock module
• brake shift interlock solenoid assembly (attached to key interlock assembly)
• necessary wiring

On floor-shift vehicles, the ignition/shifter interlock cable (3F719):

• locks the floor shift transaxle range selector lever in the PARK position when the ignition switch is in the LOCK position.
• requires the floor shift transaxle range selector lever to be in the PARK position to turn the ignition switch to the LOCK position.

Most all vehicles have main power cable to starter solenoid which is mounted on the starter where the power cable to the switch connects OR there is a separate heavy gauge red wire connected to the positive post of the battery that leads to the ignition switch. Also check your ground cable by connecting battery jumper cable to negative post on battery and other end to metal frame of van.

A common issue with the later 90's chevy was an ignition tumbler going bad. So, where you put your key in to start the vehicle--this part needs replaced. One I seen actually stuck in the starting position and burned up the starter before power could be shut off to the vehicle. Lock/Unlock buttons on the door? Try disassembly of switch and cleaning the contacts with electronic parts cleaner, dry and re-assemble. Be sure to use cleaner that is safe for plastics.

The steering wheel doesn't need to be removed in this vehicle the ignition cylinder is removed in this video.

The ignition switch is usually mounted to the steering column and is operated by a linkage rod.

NOTE On column-mounted ignition switches, don't confuse the switch with the lock cylinder and keys. The ignition switch is not normally visible. On some vehicles, the steering column support has to be removed and the column lowered to find the ignition switch. On others, the switch is accessible under the dash.



The ignition switch is operated by the key switch. Courtesy of Ford Motor Company. To replace the switch:

• Remove the ignition switch wiring harness.
• Unbolt it from its position.
• Bolt the new switch into position.
• Attach the witing harness.

Its possible that this video can helped (for Explorer)...


Good luck.

remove the steering wheel , need a puller and locking ring tool, disconnect batt, turn the key to tho on position, and remove bolt that holds the tumbler in,

The ignition switch is usually mounted to the steering column and is operated by a linkage rod.
NOTE On column-mounted ignition switches, don't confuse the switch with the lock cylinder and keys. The ignition switch is not normally visible. On some vehicles, the steering column support has to be removed and the column lowered to find the ignition switch. On others, the switch is accessible under the dash.
The ignition switch is operated by the key switch. Courtesy of Ford Motor Company.
To replace the switch:

• Remove the ignition switch wiring harness.
• Unbolt it from its position.
• Bolt the new switch into position.
• Attach the witing harness.