canvasmaker

2005 Honda Accord coupe EX 6 cyl, manual trans: Replaced both window regulators and driver side master switch. Everything was
working. Now key fobs don't work and driver side window will not move.

Unable to reprogram key fobs as they do nothing. Tried resetting electronics by disconnecting battery for 10 minutes and reconnecting, without result.

Car starts and runs fine. Passenger window works properly and can be controlled from either side. Door locks seem to be working, however they will not work if the key is off.

Any help would be greatly appreciated.

tech8

1. What year Accord, Crosstour, etc. and trim level?

2. Coupe or sedan?

canvasmaker

2005 Accord coupe EX 6 cyl manual

tech8

Possibly one or more electrical issues.

1. Since you mentioned the door locks don't seem to work if the key is off, check under-dash Fuse No. 8 (20A) to see if it is okay. If you have a voltmeter, check that there is power on both sides of that fuse. Fuse No. 8 goes to the Multiplex Integrated Control Unit (MICU) that is integrated into the under-dash fuse/relay box.

2. There may be a wiring issue at the driver's door multiplex control unit (mcu) or an issue with the MICU at the under-dash fuse/relay box.

Do you have a multimeter to test?

canvasmaker

I do not have a multi-meter. I will check the fuse tomorrow, as it is now dark. (East Coast).
When I replaced the regulators and motor, I replaced the master switch as well. At that time all worked well, however the keys had lost their program so it was necessary to reprogram the 2 keys, which I did successfully. The next day, my wife drove the car and she told me that the driver window didn't work. Coincidentally, the keys stopped working at the same time. When I originally reprogrammed the keys, they worked properly to program as well as receiving the program. Now the keys do not operate any car functions. They both seem dead.

I have replaced batteries in both keys. No change. Have also checked all fuses in both under dash and motor compartments.

canvasmaker

I replaced the window regulators of both doors and the master control switch. when this was completed, everything worked aside from having to reprogram the keys. This I did with success and all was good. My wife drove the car the next day and told me that the driver window was not working. Additionally. all remote functions of both keys stopped working. They are completely dead with no capability for reprogramming. I have replaced the batteries in both keys.

I have tried checking all fuses. I have disconnected and reconnected the battery. I have tried to reprogram my keys. I have replaced batteries for the keys.

I have been researching on this site and others and have found where similar issues have been tied to the multiplex control unit. Does anyone have information or knowledge about this component? Where is this located? What functions does it control. Could this relate to my key and window problems?

My next shot is to go to the Honda repair shop.

Would appreciate any help, please

tech8

Please stop making multiple posts and threads regarding the same thing. Your other same threads were deleted.

I previously already stated the MICU is integrated into the under-dash fuse/relay box.