Hi all, it's been years since Ive been on this forum!

some context, bought the car new, put in remote start and alarm system and been running fine until I decided to get a quote from a dealership few months ago...

About 2 weeks ago, i opened the truck with the remote, got my sunglasses, later that evening, I opened the doors and put back my sunglasses through the passenger side door, relocked.
The next day, I goto the car, to open the car.. and the keyfob doesn't respond at all. I can open the car with my key manually.
There's some hairy stuff that proceeded since I had an alarm and didn't have a way of disabling it.

Here's the symptoms:
unlock, lock, panic, and truck buttons on the key fob do not work. (no sounds, relays or reaction at all from the car)
from inside the door, i can use the button to lock, unlock, and trunk and it does work.
after removing the alarm module, I can drive the car fine with no issues.
I can trigger the remote start by using the internal door button (I used the 3x lock press method) and works fine.
If i lock the doors, (with window down) use the inside button to open, it turns on internal alarm (which is normal, and confirms working)



Things I've tried:
Replaced the battery on the keyfob, same issue. (keyfob led turns blinks)
Checked battery voltage / health - good.
Reprogrammed the key fob with the ignition (2), press, ignition(off) repeat method. - did not ever learn or lock/unlock doors.
Bought an used keyfob - tried reprogramming it as well, same result.
Got a used keyless entry module (the one above the brake), tried reprogramming, did not work.
Unplugged the remote start / alarm module, same issues.
I bought a second remote start brain off ebay, plugged it in, did not help.
Confirmed that the original remote start brain works by using the internal buttons to trigger remote start.
I checked all the fuses in the driver side kick panel, all good.

I'm not sure what is left?

Thanks guys!

 

1. Check all the fuses related to the transmitter.
   1. Under dash: No. 21 & No. 6
   2. Under hood: No. 15, No. 22, No. 23
2. Check power and ground is good to the transmitter unit.
   1. GRY/BLU = Battery Voltage
   2. YEL = Battery Voltage (positions ON and START only)
   3. BLK = Ground
   4. PNK/BLK = Com line (you'll probably need a scope to see it)
3. Check the remote start system does not interfere with the transmitter system

 

Thanks El Cheapo!

Diagrams are super helpful!

1. Check all the fuses related to the transmitter.
   1. Under dash: No. 21 & No. 6
   2. Under hood: No. 15, No. 22, No. 23 (checked all these fuses)
2. Check power and ground is good to the transmitter unit.
   1. GRY/BLU = Battery Voltage (12.3V)
   2. YEL = Battery Voltage (positions ON and START only) (12.3V on start position)
   3. BLK = Ground (ground)
   4. PNK/BLK = Com line (you'll probably need a scope to see it) (I'll try get a cord with an oscilloscope out there)
3. Check the remote start system does not interfere with the transmitter system - I m not sure how to do this one, but this shouldn't be the case?

I have a spare keyless entry module plugged in (tried with the original first), but all the pins seem to be energized as above.
Reprogramming does't take at all.

Thanks in advance!

 

I bought a used MICU from ebay.. I've seen online some have to be programmed?
Will this drop in or will I need help from Acura dealer?

Thanks!

 

no programming required