Acura MDX SUV Forums banner

1 - 8 of 8 Posts

·
Registered
Joined
·
14 Posts
Discussion Starter #1
My HFL/Bluetooth module finally kicked the bucket after a few oven bakings, so I tried a couple FM transmitter Bluetooth adapters. They worked fine for music etc, but the call quality was not great. I decided to do some more research and decided upon the USA SPEC BT45 HON3. You can also use the USA SPEC BT45ACU version. I didn't really see the difference between them. It is a really simple install for any of you wanting "stock" Bluetooth functionality.

The main thing I differently from any of the guides I have seen is that I placed my Bluetooth unit in the front dash area of the car and not all the way in the back with the XM unit. I didn't want to have to run the microphone all the way to the front of the car, and wanted to be able to use the USB charge port and AUX port on the unit.

I followed this video to remove the radio.

Really simple steps.


  1. Carefully pry off the "wood" panel on the drivers side of the stereo (I used an old putty knife)
    https://imgur.com/ZDdoHDS
  2. Pop off the panel on the right of the dash, behind the passenger door
    https://imgur.com/C7iNikn
  3. Remove one screw on the side of the "wood" panel
    https://imgur.com/iyKZC4Y
  4. Carefully pry off the "wood" panel above the glove box and to the right of the stereo
    https://imgur.com/nF8Omcy
  5. Unscrew the four screws holding in the stereo. Put something in there to make sure you don't lose any to the black hole below (not that I would know anything about that happening)
    https://imgur.com/YxaYFoZ
  6. Pull the stereo straight out. Put a little cardboard or something down so you don't scratch the panel by gearshift
    https://imgur.com/HDZWy8W
  7. Remove the XM connector on the back of the stereo. It is the only WHITE connector.
    https://imgur.com/Qc5qY7p
  8. Plug in the cable provided by USA SPEC. This is a pass-through cable. Replace the existing XM cable you previously removed, or you will not get a readout on the main nav screen, and when the nav screen sleeps it will remain slightly lit (not that I would know anything about that happening)
    https://imgur.com/CPGRz1S
  9. I decided to hide the Bluetooth box in the utility sliding door to the right of the dash. I drilled a hole big enough to pass some cables through.
    https://imgur.com/aqWXme9
  10. Then I used some velcro to attach it in there and connected the mic cable.
    https://imgur.com/wSikeyq
  11. I decided to mount the mic up on the dash to the right of the gauge clusters. That little black panel pops off easily to hide the cable. (this actually took the most time to figure out)
    https://imgur.com/BPSBlJB
  12. SIDE NOTE: There has always been dust in the climate control/radio readout screen. so I pried off the cover a bit and shot some compressed air in there and it cleaned it out really well.
    https://imgur.com/anNjAFL
    Just pry the top forward with a small flathead screwdriver https://imgur.com/B8MAf4P

    Once I was done with all that I hid the wires down the hole behind the stereo, and reversed the process. This is something that can be easily done in less than an hour. Bluetooth works great. You can stream music, and receive calls. Music quality is great. Call quality is decent (there is a little buzz).
 

·
Registered
Joined
·
14 Posts
Discussion Starter #2
One important note. In this configuration the stereo does NOT automatically switch over to XM as promised. Not sure if it because I didn't hook it up in the back. A minor nuisance. Just switch to XM via MODE button on steering wheel and press CHAN +/- on steering wheel and the call answers.
 

·
Registered
Joined
·
571 Posts
Thanks for the write-up! This is the most likely route for me if the bake fails in the future and has the added benefit of bluetooth music, much nicer than having to plug in the aux cord.
 

·
Registered
Joined
·
57 Posts
I have a question for you. I bought a BT45-acu. Can that be installed in the back of the radio, or does that only fit in the back on the XM unit? I am asking because I like to connect the mic that came with the unit and I don't want to run it all the way to the XM unit in the back.
 

·
Registered
Joined
·
57 Posts
After I pulled the stereo unit out I found out that it doesn't plug in the back of the stereo. I decided to run the mic all the way to the XM plug in the trunk area. I installed it on the dash and routed the wire behind the cluster to the driver side, then down the A-pillar inside the plastic then continuing all the way back underneath the plastic pieces.
 

·
Registered
Joined
·
5 Posts
I installed mine in the back and it was a piece of cake to run the mic wire to the back. Remove the trim work around the back and run a fish tape up the side as far as you can. Go to the driver's side and remove the sun visor and slide back the sunroof cover. I could see the fish tape along side the sunroof at that point. I used a plastic trim removal tool to pry down the headliner a bit and pushed the taped the rest of the way out. Tape the cable to the tape, pull it all the way out, remove the trim down the side (in the rear of the car), hide the wire behind the trim and plug it into the unit. Put everything back together and you are done. Total it was maybe 15-20 minutes. I too thought it was going to be a PIA, but it was easy.

The only issue I have is you cannot pickup or hear your phone calls unless you switch over to XM1 first (unlike what they show on their videos).
 

·
Registered
Joined
·
4 Posts
I know this is an old posting, but I just want to say thanks for this great writeup! I was able to install the BT45-hon in my MDX in less than an hour following these directions. I even copied the location of the microphone and velcroed the unit into the passenger cubby box. The only difference with mine, was that when I connected the XM line into the pigtail, it bled the XM into the bluetooth. When I unplugged the XM pigtail, I got a clean signal from the bluetooth and I still get the song titles on the readout.
 
1 - 8 of 8 Posts
Top