My remote will no longer open or lock my doors I have a 2002 Acura mdx I changed the batteries thinking that was probably the issue but still nothing.

Acura what ? MDX , NSX , RL , RSX , TL , TSX ? Probably a faulty input to the BCM - body control module or what ever module Acura uses to control the locks with . Could have DTC - diagnostic trouble code stored .
Door Locks Go Crazy 1
Door Locks Go Crazy 2
Door Locks Go Crazy 3

1. broken / loose wire
2. power door latch broke/defective. ( operating solenoid in latch is bad).

Check ur fuses an relays relay is either in drivers side kick panel or under hood

Hello,

Sounds like the actuator has gone bad (replace - may be some videos out there on youtube)

I hope this helps

replace the locking mechanism

Take off the trim panel and see if you can see the servo that controls the locks push rod. It may have been disconeted, or broken, the ends are usually made of plastic. Also you will be able to see if it is even actuating when you press the lock/ unlock. Good luck!

You need to get the serial number off the sticker attached to the radio and nav. It will require pulling apart your dash. Call an Acura dealership with that serial number and they should be able to provide you the code. Or you can take it directly to the dealer but you will be charged labor.

It sounds like the circuit has a short in it somewhere. You can check for grounding with the same tester your used to measure the amp draw. Connect the tester and put it on continuity, this should sound an alarm when a closed circuit is detected. Move the harness around to see if it goes off.

i had this problem when i bought my mdx second hand. i called the acura dealer and they gave me a code. you will need ur serial numbers off the sticker on the top of the radio.keep it safe cause when ever u dissconnect your batt it is gonna do it all over again!