I need to change my wiper blades on 2016 kia optimia. I have turn off ignition when wipers on but they still park

check the wiper fuse first and possibly change wiper motor

Hey Derek , here is how the wipers park position is suppose to work !
Windshield wiper motor park operation is controlled by the body control module (BCM) using an input from the park switch within the wiper motor assembly. The BCM monitors the windshield wiper motor park switch circuit to determine if the windshield wiper blades are at the bottom of the glass. The circuit will be pulled to ground by the wiper motor park switch while the windshield wiper motor is operating. When the wiper switch is turned to the OFF position while the wiper motor is somewhere in mid-cycle, the BCM will continue to operate the motor until the wipers reach the park position. If the ignition is turned OFF while the wipers are in mid-cycle, the wipers will stop immediately where they are. The BCM will park the wipers the next time the ignition is turned ON.
The wipers will not park when they are commanded ON and OFF with a scan tool. The BCM will park the wipers the next time the wiper switch is turned ON and OFF.
The BCM provides stall protection for the wiper motor by monitoring the park switch. If the park switch does not transition for 3 seconds while the wipers are operating, the BCM will assume that the wiper motor is stalled, and will de-energize the wiper relay until the wiper switch is cycled OFF and ON again.
Check for a voltage signal on the yellow wire at the wiper motor assembly , this is signal to the BCM ! If there is no signal you need to replace the windshield wiper motor assembly ? If there is a signal need to have Tech 2 scan tool hooked up to see if The BCM is the problem ! Relay #39 an #40 are the high an low wiper relays in the under hood fuse block ! Do you have a volt meter ,do you know how to do electrical testing ?

buy a complete wiper arm from ebay or amazon because the original blade is not standard the center it thinker than a normal 10 inch blade ..the good thing is when you change the rear wiper arm you can then use normal 11 inch blades when you need to change again the cost of a new arm and blade is around £15 [2016 ] keep the original black cover nut because i found the replacement did not fit over the nut

if you changed your wiper motor and did not turn it on and let the motor return to park before installing blades,i would remove the blades ,turn on the wipers and then off and wait till they do park,then reinstall blades.

model: 2001 C240 problem: wiper blades "park" almost in the middle of a windshiled when turned off. When wiper blades are on they cover complete range of a windshiled.

Wiper motor arm disengaged or slipping on drive shaft.

Wiper arms slipping on splines at pivot point of wiper arm.,,,more likely.

Wipers are held to drive splines with a 10mm nut.

Make sure wipers are in in 'parked' position buy turning on ignition and making sure wiper switch is OFF.

Turn off ignition.

Pry off the black round plastic cover off the arm where it attaches at the splines. ( Drive splines on lower windshield cowl.)

Tighten nut/s.

Wiper Arm & Blade (Front) Removal & Installation Wiper Blade To Remove:

1. Turn ignition switch to ACCY position.
2. Turn wiper switch to PULSE position and turn ignition OFF when wipers are stopped in the innerwipe position.
3. Push the wiper blade clip button IN and remove wiper blade from wiper arm.

To Install:

1. Insert wiper arm hook through opening in wiper blade.
2. Place wiper blade pivot in the inside radius of wiper arm hook.
3. Pull on wiper blade pivot into hook until it locks into place.
4. Check wipers for proper operation.

Wiper Arm To Remove:
NOTE: Mark position of wiper blade on windshield to ensure proper position upon reassembly.

1. Remove washer hose.
2. Lift wiper arm from windshield and use a screwdriver to disengage retaining latch.
3. Remove wiper arm from shaft.

To Install:

1. Place wiper arm on shaft so that wiper arm aligns with marks placed on windshield.
2. Press arm assembly on shaft and push retaining latch IN.
3. Connect washer hose.
4. Remove windshield markings and check wipers for proper operation.

2002 Ford F-250 Windshield Wiper Motor Removal & Installation 1. Turn the ignition switch to the ON position. Turn the ignition switch ON until the wiper blades are straight up, then turn the ignition switch OFF. 2. Disconnect the negative battery cable. 3. Remove the right-hand and left-hand windshield wiper arm and blade assemblies. 4. Remove the cowl top vent panels. 5. Detach the electrical hardness connector at the windshield wiper motor assembly. 6. Remove 3 wiper motor (module assembly) retaining bolts and remove the module assembly from the vehicle. 7. Remove the wiper linkage retaining bolt and remove the linkage from the wiper motor. 8. Remove 3 retaining nuts and remove the windshield wiper motor To install; 9. Place the windshield wiper motor in position and install 3 retaining nuts. Tighten to 10-12 ft. lbs. (12-17 Nm). 10. Connect the wiper linkage to the windshield wiper motor and install the retaining bolt. Tighten the bolts to 14 ft. lbs. (20 Nm). 11. Place the wiper motor (module assembly) in position and install 3 retaining bolts. Tighten the bolts to 6 ft. lbs. (9Nm). 12. Install the electrical hardness connector to the windshield wiper motor. 13. Connect the negative battery cable. 14. Allow the windshield wiper motor to cycle several times while checking for proper wiper motor operation. 15. Turn the windshield wiper motor to the OFF position to park the wiper motor in the park position. 16. Install the cowl top vent panels. 17. Install the wiper arm and blade assemblies. Install the retaining nuts and tighten to 22-29 ft. lbs. (30-40 Nm). 18. Connect the negative battery cable. 19. Check the windshield wiper motor for proper operation and the wiper arms for adjustment.

They (the wiper motor and mechanism) are underneath the cowl vent screen.

To replace the motor and mechanism:
1: Turn the ignition to the on position with the wipers at low speed. When the arms are point straight up, turn it off.

2: Use a small screwdriver and pry the plastic caps from the wiper arm mounting ends.

3: Disconnect negative battery terminal

4: Remove the small retaining nup from each wiper arm, then the arms.

5: Remove the cowl screen by turning the eight plastic retainers 1/4 turn counterclockwise. Next remove the six screen retaining clips. If it's a 2000 or later, remove four bolts that secure the arm monting bar so that you can access the wiper motor.

6: Disconnect the electical connections and remove the four screws that secure the motor and mechanism to the cowl, and take out the motor-mechanism assembly.

7: The drive mechanism isn't serviceable, but the motor can be replaced. Remove the operating arm nut from the motor shaft, and remove the three screws that hold the motor to the drive mechanism.

8: Reinstall the wiper mechanism into the cowl and connect the electrical connectors. (Before reinstalling the wiper arms and blades, turn the ignition to the on position and turn the wiper switch to either LO or HI, then turn the wiper switch Off. This lets the motor cycle to the park position thus avoiding damage to the arms and drive mechanism).

9: Install the wiper pivot arms, ensuring the blade tips align with the park reference mark at the base of the windshield.

10: Ensure that your wiper blade is fully seated on the wiper arm before operation the wipers.

11: Finish up the reverse way you began.

you may of fitted the blades when the wiper motor wasnt in park

ok remove wiper arms turn ignition on turn on wipers then turn of by wiper swicth not key motor will stop in park position fit wiper arms in positon try and your done