USASPEC BT45-ACU User manual

the newly engineered innovative
Bluetooth music & phone interface
Product Manual
www.usaspec.com
167 Mason Way, A-2
City of Industry, CA 91746

Table of Contents
Product Overview ...................................................................1
Notice ....................................................................................1
Installation & Operation Precautions......................................1
BT45-ACU Package Content ................................................... 2
Compatibility Information
Bluetooth Device Compatibility ........................................ 2
Radio & Device Compatibility for Music Info Display ......... 2
Vehicle Compatibility & XM Tuner Location ...................... 3
Installation
Installation Instruction ..................................................... 4
Diagram A: Cable Connection ........................................... 5
Diagram B: Recommended Microphone Locations............ 6
Bluetooth Setup
Bluetooth Device Pairing Instructions................................ 7
Switching Audio Source: from AM/FM, CD, CD to Bluetooth
Source............................................................................... 7
Media Streaming
Music Playback Control .................................................... 8
Hands-Free Phone Calls
Answer and End Calls ....................................................... 9
Make Calls .......................................................................10
Hands-free to Handset .....................................................10
Enable & disable voice prompt..............................................10
AUX PORT............................................................................ 11
USB charging port ................................................................ 11
Troubleshooting .................................................................. 12
Limited warranty.................................................................. 15
12262019

1
The BT45 seamlessly integrates your vehicle’s OEM sound system
with Bluetooth (HFP) devices for hands- free phone calls and media
streaming. You can wirelessly connect your A2DP Bluetooth prole
equipped smartphone or tablet to play stored music or stream the
audio from your favorite media apps such as, iHeart Radio,Pandora,
Spotify, and YouTube. The built in echo & noise cancellation
feature will give you crystal clear sound quality on your hands free
phone calls. The all-speaker playback feature will give you a rich &
dynamic music streaming quality. The BT45 has an additional 3.5
mm auxiliary audio port, so you can play music stored in your non-
Bluetooth devices. It also has a USB charging port so you can keep
you devices charged and ready to go.
The BT45’s plug & play technology takes advantage of the OEM
radio’s ability to accept an external CD changer or Satellite Radio
by converting it into Bluetooth phone/audio streaming/AUX
input source. This design innovation allows you to maintain
functionality of existing factory installed options such as,
Bluetooth HandsFreeLink, LiveTrac, Navigation, CD changer,
Satellite radio, RSE (rear seat entertainment system), and AUX/USB
input.
Notice
USA SPEC solely distributes its products through authorized
dealers in order to ensure its customers receive proper services
and information from the dealers. USA SPEC reserves the right
to only oer technical support or warranty services for products
purchased through authorized USA SPEC dealers. Please refer
to our website www.usaspec.com for a list of authorized dealers.
• DO read the entire manual before starting the installation. We
recommend that the BT45 be installed by a qualied professional
since all installations will require the removal of some parts
of the vehicle such dashboard, backseat, etc.
• DO install the interface securely using Velcro or wire ties (not
included) and keep away from any moving parts such as the gas
pedal.
• DO NOT open, disassemble, or modify the BT45 in any way. Such
attempts will void the warranty on the product.
• DO NOT expose the interface to extreme temperature, humidity,
or direct sunlight.
• DO NOT operate the Bluetooth device while driving. Always give
full attention to the road while driving.
Product Overview
Installation & operation precautions

2
BT45-acu Package Content
• 1 Product Manual
• 1 BT45 Interface Module
• 1 CAS-ACU Cable
• 1 MIC45 Microphone
Compatibility Information
Bluetooth Device Compatibility
BT45 is compatible with most Bluetooth wireless technology enabled
devices currently on the market such as iPhone, iPad, iPod Touch,
Android smartphones & tablets, Windows smartphones & tablets, and
Blackberry. Devices must have Bluetooth prole A2DP (Advanced
Audio Distribution Prole) and AVRCP (Audio/Video Remote
Control Prole) 1.4 or higher for audio streaming and text
display.
Note: Due to the dierence in Bluetooth technology, some Bluetooth
enabled devices may be incompatible or may not support all of BT45’s
features.
Radio & Device Compatibility for Music Info
Display
The display of artist, album, and song title information on the radio is
determined by the following 2 factors
1. Your device's (smartphone) operating system: iOS 6 or higher,
Android 4.0 (Ice Cream Sandwich) or higher
2. Your device's Bluetooth prole: AVRCP 1.4 or higher

3
Vehicle Compatibility & XM Tuner Location
• The BT45-ACU package is specifically designed for the
below listed year range Acuras with LiveTrac options.
The LiveTrac service DOES NOT have to be activated. If
activated you will not lose any LiveTrac functionalities.
• For Canadian model vehicle please contact us at
[email protected] to verify compatibility.
MODEL YEAR XM TUNER LOCATION (1)
RL (Nav) 05-08 Behind the driver side
quarter panel in the trunk
TL (Nav) 07-08
Behind the passenger
side quarter panel in the
trunk
MDX (Nav)(2) 07-09
Underneath the
subwoofer, behind the
passenger side panel in
the trunk
RDX (Nav) 07-09 Behind the glove box
(1) See under the "Details" tab on http://www.usaspec.com/p-
314-bt45-acu.aspx for photos of XM tuner locations.
(2) See p.9 for functionality exception.

4
Installation Instruction
Installation
Install the microphone
See p.6 for
recommended locations
(Optional)
Install cables for the
3.5mm AUX port and the
USB charging port
Pair your Bluetooth
device (phone)
See p.7 for instructions
Learn about media
streaming, hands-free
phone calls, and AUX input
on p. 8-11
Make sure you have
completed all of the above
steps and have made
a couple of test calls before
putting your car
back together
Please see p. 12-13
for troubleshooting Q&As
Set the dip switches on
the interface module to:
1-ON, 2-OFF
3-ON, 4-OFF
(Dip switch ON= DOWN)
Follow Diagram A on p.5
for cable connections
Install the BT45 interface
module in an easily
accessible location
Locate the XM tuner
See p.3 for tuner location

5
Diagram A: Cable Connection
XM TUNER*
CAS-ACU
TO RADIO
14-pin male
14-pin female
BT45 INTERFACE MODULE
Unplug the factory 14-pin cable from the XM tuner
* The above depiction of the XM tuner is a generalized depiction, the tuner in your vehicle will look similar but not exactly the same.
DIP SWITCHES

6
Diagram B: Recommended Microphone Locations

7
Bluetooth Setup
Bluetooth Device Pairing Instructions
1. Enable the Bluetooth function on your device (phone)
2. Turn your vehicle's ignition ON
3. Scan/search for available devices from your phone. It may
take up to 30 seconds for your phone to locate the BT45
4. Select BT45-HON from the list of available devices your
phone has detected.
5. Select XM1 from your radio
6. Allow the pairing process to take place
7. Once pairing is complete you will hear the "CONNECTED"
voice prompt from your vehicles' audio system and the radio
will briefly display the name of your phone, i.e. USA SPEC
TEST PHONE
• If your device asks for paring pin number then enter: 1234
1. Press the XM1 tab from your vehicle's navigation screen or
press the MODE button to cycle through the audio source
until you reach XM1
2. Once the BT45-ACU is connected, XM1 will become the
Bluetooth audio source and XM2 will still remain as XM radio
presets.
Switching Audio Source: from AM/FM, CD, CD to
Bluetooth Source

8
Media Streaming
• If you have music stored in your device, it will begin to play
right after the "CONNECTED" voice prompt. If playback does
not start automatically, turn the radio TUNE knob to the right
(TUNE UP). You can also proceed to manually start playback
on your device from your preferred media app such as
Pandora, YouTube, or Podcast app.
• Your radio will display music information such as artist,
album and song title.
• The BT45-ACU will assign track numbers to the currently
playing audio tracks if your radio is unable to display music
info due to device compatibility (see p.2 for details).
Music Playback Control
Next & Previous Track
1. From the radio: turn the TUNE UP/DOWN knob
2. From the steering wheel: press the CH+/- button. In some
vehicles you may need to press & hold the CH +/- button.
Pause & Play
1. Pause the media streaming directly from your device (phone)
2. Radio display will say [PAUSED]
3. To resume streaming: turn the radio TUNE knob to the right
or press / press & hold the CH+ button on the steering
wheel
Volume Up/Down
1. From your device (phone) set the volume to MAX
2. Use the volume control on the radio or the steering wheel to
adjust the streaming volume to the desired level

9
Hands-Free Phone Calls
Answer and End Calls
When there is an incoming call:
1. The BT45 will automatically mute the audio source (AM/FM,
CD, or XM) that you are listening to
2. You will hear "You have a call from xxx-xxx-xxxx (caller #)"
or "private" if caller ID is not available. If the voice prompt
features is disabled then you will only hear the phone's
ringtone. See p.11 on how to enable/disable the voice
prompt feature.
• The auto-mute feature is not supported by MDX (NAV)
07-09: You must manually switch to Bluetooth source
(XM1) when you hear an incoming call (see "Switching
Audio Source" on p.7).
Answer Calls
3. From the radio: turn the TUNE knob to the right
4. From the steering wheel: press the CH+ button. In some
vehicles you may need to press & hold the CH+ button.
NOTE: if a call comes in while you are in XM2 you must
manually switch to XM1 first
End or Reject Calls
5. From the radio: turn the TUNE knob to the left
6. From the steering wheel: press the CH- button. In some
vehicles you may need to press & hold the CH- button.
• Once a call has ended, the radio will remain in the Bluetooth
source (XM1), you must manually select the source you wish
to go back to

10
Make Calls
1. Dial calls directly from your phone
2. OR use your phone to engage its voice dialing function such
as Siri, Google Now, and Cortana. Once engaged, your voice
command will be picked up by the BT45's microphone (1).
3. As soon as an outgoing call is dialed, the BT45 will
automatically switch the radio source to Bluetooth (XM1)
4. Turn the radio TUNE knob to the left or press (press & hold)
the steering wheel CH- button to end the call
(1) Please keep in mind that the environment inside a moving
vehicle tends to be noisier than your average environment.
This will aect how accurately your phone's voice recognition
function such as Siri picks up your voice command.
Hands-free to Handset
Transferring an active call from hands-free to Handset
1. While on a call, turn the TUNE knob to the right to transfer
the call from hands-free to handset
2. Turn the same knob to the right again to transfer the call
back to hands-free mode

11
AUX PORT
USB charging port
1. You will need a 3.5mm to headphone jack cable (not
included in this package)
2. Go to XM1 then press PRESET 6 to access the audio device
connected to the AUX port
• Remember to turn the volume from the audio device to
MAX first then use the radio's volume control to adjust to the
desired level
• USB charging cable is not included in this package
• Maximum charging output: 2.1 amps at 5 volt
Enable & disable voice prompt
1. Turn your vehicle's ignition ON
2. Go to Bluetooth source (XM1)
3. Disable the Bluetooth function from your phone's setting
4. Wait 5 seconds, then turn the TUNE knob to the right to
ENABLE. Turn the same knob to the left to DISABLE
5. Enable your phone's Bluetooth function and reconnect to
the BT45. The feature will stay disabled or enabled until you
perform the above steps again.
• The above steps will enable/disable both the voice
prompt and the caller # announcement features

12
• Do I have to acvate my LiveTrac for the BT45-ACU to work?
 No,theBT45-ACUwillworkregardlessofyourLiveTrac's
 subscriponstatus.
• I connected all the cables properly in my RL but the BT45-ACU is
sll not funconing.
 MakesureyouhaveconnectedtotheXMtuner(seep.3for
 locaon)andnottheCDROMthat'sunderthereardeck.
 Acura'sCDROMlooksverysimilartotheXMtuner.
• I already have a USA SPEC PA15-ACUxl installed in my vehicle, Can I
add the BT45-ACU and have both connected?
 No,unfortunatelyyoucanonlyhaveoneortheother.
• My hands-free phone call volume is very low.
 FirstadjustvolumeonyourphonetoMAXthenusetheradio
 volumecontrolstoadjusttothedesiredlevel.
• I’m unable to pair my smartphone/device.
 1.Delete/forgettheBT45fromyourphone’sBluetooth
 seng.Resetyourphoneandtrythepairingprocessagain.
 2.IfyouhaveanAndroiddevice,makesurethe“Onlyvisibleto 
 paireddevices”oponisUNCHECKED.Somemesitcantake 
 upto30secondsfortheBT45tobedetectedbyyour  
 smartphone/device.
• My radio is not displaying any music info such as song tles.
 ConrmthatyourdeviceisequippedwithBluetoothprole 
 AVRCP1.4orhigher,ithasiOS6.0orhigher,orAndroid4.0or 
 higher.
 Musicstreamingapps’infodisplaycapabiliesvarythussome 
 mightnotdisplayproperlyonyourradio.
• Do I lose my XM funcons since XM1 is now for Bluetooth?
 No,youareonlylosingthepresetsunderXM1.Youcansll
 accessyourSatelliteradiothroughXM2.
faqs & troubleshooting Topics

13
For help with any additional issues, please contact tech support
at [phone] Mon-Fri: 9am-5pm PST
or e-mail us at [email protected]
Additional troubleshooting Q&A are available at
http://www.usaspec.com/t-faq.aspx
• My vehicle is equipped with factory HandsFree Bluetooth, is the
BT45-ACU sll compable.
Yes,therearetwoopons.
 A.Un-pairthefactoryBluetoothfromyourphoneandusethe
 BT45-ACUforbothhands-freephonecallandmediastreaming.
 B.Useyourfactoryhands-freeforphonecallsandBT45-ACUfor
 mediastreamingonly.
Android device:Seng->Bluetooth->MORESETTING->BT45- 
HON->Uncheckthe"phoneaudio"opon.
iOS device:iPhoneswithiOS6.0&higherwillautomacally
connecttoboththefactoryandtheBT45-ACUatthesame
me.Whenthereisanincomingcall,youwillbeabletoselect
fromyouriPhone'sscreenwhethertousethefactoryorthe
BT45toanswerthecall.

14

15
ThankyouforchoosingaUSASPECproduct.USASPEC,Inc.,iscommiedtoproviding
highqualitydefect-freeproducts.AllUSASPECproductsaretestedbeforeleavingthe
factoryandwarrantedagainstdefectsinmaterialsandworkmanshipforaperiodofone
yeartotheoriginalowner.Theone-yearwarrantyperiodbeginsatthedateofpurchase
fromanauthorizeddealer.
PRODUCTSCOVERED:
ProductsandrelatedaccessoriessuppliedbyUSASPEC,Inc.withthebrandnameofUSA
SPECarecoveredbythiswarranty.OnlyproductspurchasedintheUSAarecovered.
WARRANTYDOESNOTCOVER:
1.Damageduetoimproperinstallaonoroperaon,negligence,abuse,ornotfollowing
instrucons,warningsoracceptableindustryprocedures.
2.Damagecausedduringtheshipmentortransportaonoftheproduct.Allclaimsof
thisnaturemustbepresentedtothecarrier.
3.DamagecausedbyactsofGod,war,orcivildisturbance,includingwithoutlimitaon,
ood,re,storms,earthquakeorotheractsofnature.
4.Anyexpensesorcosttoremoveorreinstallproducts.
5.Anyproductwithouttheoriginalserialnumberandfactoryseal,orhasbeenserviced
ormodiedwithouttheauthorizaonofUSASPEC.
6.AnyproductnotdistributedbyanauthorizedUSASPECdealer.
TOOBTAINWARRANTYSERVICE:
ContacttheCustomerServicecenterforassistanceat(626)336-3836.Adetailed
descriponoftheproblem(s)isrequiredforservice.Proofofpurchaseisalsorequired
whensendingaproductforwarrantyservice.Iftheproblemcannotberesolvedand
theproductmustbereturnedforservice,youwillreceiveanauthorizaonformfrom
theservicecenter.Theproductmustbedeliveredpre-paidtotheservicecenter.USA
SPECwill,atouropon,repairtheproductorreplaceitwithaneworrecondioned
product,andifitwasshippedtotheservicecenter,thereturnshippingwillbepre-paid
freeofchargeprovidedtherepairsarecoveredbythewarranty.Theproductmustbe
packedsecurelyforshipmenttotheservicecenterinordertopreservethewarrantyand
preventdamage.
NOIMPLIEDWARRANTY,INCLUDINGMERCHANTABILITYANDFITNESSFORUSEAPPLIES
TOTHISPRODUCTAFTERTHEONEYEARPERIODASDEFINEDABOVE,ANDNOOTHER
EXPRESSEDWARRANTYORGUARANTEE,EXCEPTASMENTIONEDABOVE,GIVEN
BYANYPERSON,FIRM,ORCORPORATIONWITHRESPECTTOTHISPRODUCTSHALL
BINDTHEWARRANTOR.NEITHERTHEWARRANTORNORANYOTHERPERSON,FIRM,
ORCORPORATIONISRESPONSIBLEFORLOSSESORINCONVENIENCES,ORFORANY
CONSEQUENTIALDAMAGESCAUSEDBYTHEPRODUCT.SOMESTATES/PROVINCESDO
NOTALLOWLIMITATIONSONHOWLONGANIMPLIEDWARRANTYLASTS,ANDSOME
DONOTALLOWTHEEXCLUSIONORLIMITATIONOFINCIDENTALORCONSEQUENTIAL
DAMAGES.
Thiswarrantygivesyouspeciclegalrights,andyoumayalsohaveotherrights,which
vary,fromstatetostate,andprovincetoprovince.Someofthelimitaonsorexclusions
maynotapplytoyou.THEABOVEWARRANTYTERMSANDCONDITIONSAREVALIDONLY
INTHEU.S.A.
Limited warranty

• For vehicles without navigation
use the BT45-HON3
• For Canadian model vehicles
without LiveTraffic please contact
us at [email protected] to verify
compatibility
Acura is a registered trademark of American Honda Motor Company, Inc.
Bluetooth®Music & Phone Interface for
Acura with LiveTrac
All Speaker
Playback
3.5 mm
AUX Input
HandsFree
Phone Call
Wireless
Media
Streaming
♬
USB
Charging
Above application chart is for general references only.
Please check our website www.usaspec.com to verify
specific application.
clear &
Dynamic
audio
Quality
Maintains all
factory
functionalities:
HandsFree Link,
LiveTraffic, Nav, XM
built-in
noise Cancellation
DSP Hardware &
CVC Software
Music
info &
caller #
Display
music
playback
control
auto-
mutes
radio for
incoming
calls
easy
1-button
Operation
to answer
calls
Model Year
RL (Nav) 05 - 08
TL (Nav) 07 - 08
MDX (Nav) 07 - 09
RDX (Nav) 07 - 09