Cadillac STS-HF Instruction Manual

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STS-HF
QuickStartInstallationGuidefor2005-11CadillacSTSwithXMTuner
Created November 19, 2017
Revised: November 21, 2019

Introduction:
Many 2005-11 Cadillac STS owners are eager to bring their smartphones and
other digital media devices on the road and with them tons of music applications.
The STS-HF works with virtually all Bluetooth enabled phones and sounds great
whether using it for mobile conversations, streaming music applications or
listening to XM (if subscribed). One button with built-in mic conveniently installed
on the dash is used to launch Voice Recognition application (Siri, Google Now,
Assistant etc.), initiate phone calls, launch applications and more. Keep the
radio, car and XM Tuner subscription while enjoying Bluetooth features only
available on newer cars. Note: Vehicle must have an XM tuner with or without
subscription. If subscribed that option remains operational.
See Frequently Asked question at the end of this guide for details.
Installation:
Radio removal required to gain access to the connectors.
1. Using a panel removal tool, unclip and remove the top A/C vents panel
(See Fig. 1)
Fig. 1
2. Remove 10mm crews securing radio to dash (See Fig. 2)
Fig. 2
3. Pull radio forward to reveal connectors (See Fig. 3)
Fig. 3
Radio 16-pin connector
4. Disconnect 16-pin plug (See Fig. 4) from radio (See Fig 3). To release
plug, pull back blue locking tab, press black release tab. (See Fig. 4)
Warning: When disconnecting factory plugs, do not pull on wires.
Press release tab, grasp and pull plug to remove.

Fig. 4
16-pin plug
5. Connect factory 16-pin plug to mating connector on installation
harness (See Fig. 5)
Fig. 5
16-pin connector
6. Connect 16-pin plug from installation harness (See Fig. 4) to radio
chamber vacated in step4
7. Secure Black (ground) wire from installation harness to chassis
ground or simply remove radio chassis screw and secure ground wire
to radio as seen in Fig. 6
Fig. 6
8. Turn ignition key to ACC position and turn radio “ON”
9. Look through module USB port to verify LED is flashing. If NOT, radio is
not able to supply enough current to drive module in which case
you must cut module red wire and connect to an alternate
Accessory (switched) power source in your vehicle (cigar lighter,
fuse box, ignition cluster etc.)
Red accessory wire must be connected to a
switched/accessory supply source. Avoid
connecting to constant battery supply.
Fig. 7
10. Connect installation harness right angle 3.5mm plug (See Fig. 7) to
short pigtail jack (See Fig. 8)
Fig. 8
11. Connect installation harness straight 3.5mm plug (See Fig. 7) to
module “CD/AUX” input (See Fig. 9)

Fig. 9
module CD/AUX jack
12. Connect push button control/microphone (See Fig. 10) to “MIC” input
jack on module (See Fig. 9)
Fig. 10
Control button/Microphone
13. Consider where to install control/mic button. Keep in mind the control
button must be within reach and facing driver for voice commands and
phone dialog (microphone/control cable is 6ft. long). We recommend
completing the rest of the install prior to securing the
control/mic button to the dash. Once you decide on a location simply
remove tape backing from control /mic button
Make sure they are no ventilation duct is pointed towards the mic.
It is best to mount button facing driver
See Optional Microphone/control button installation kit at the end of
this guide.
Bluetooth Module has a built-in USB Charging port (See Fig. 13) should you
decide to use it; we suggest one of 2 installation options:
A. Flush to dash/panel which requires a ¾” hole in the dash
B. Flush with Support bracket (use this option to mount USB terminal
wherever your installation demands without drilling)
A. Flush to Dash or Panel (requires drilling)
1. Drill a ¾” hole in the dash or panel using a step drill bit or equivalent
(See Fig. 11)
Fig. 11
Step drill bit
2. Insert USB male terminal (See Fig. 12) through the ¾” hole created in
step 1 and connect to Module (See Fig. 13)

Fig. 12
Flush mount 3 ft. USB cable
Fig. 13
Module USB port
3. Push USB head (See Fig. 14) until it snaps in place and flush with
mounting surface (See Fig. 15)
Fig. 14
Flush mount USB Terminal
Fig. 15
Flush mounted to dash
4. Tuck and secure any extra wire from moving parts and test operation
B. USB with Bracket Mount (No drilling)
1. Locate a flat surface at location of choice to mount USB support
bracket (See Fig. 16) to surface using adhesive/tape or screws.
Fig. 16
USB mounting bracket
2. Insert USB male terminal through hole in bracket (See Fig. 17) and
connect to Module (See Fig. 13)
Fig. 17
3. Push USB head until it snaps in place and flush (See Fig. 18)

Fig. 18
4. Tuck and secure any extra wire away from moving parts and test operation
( See Bluetooth Pairing and Connection )
The radio cavity in most vehicles may lack extra room
needed to fit aftermarket equipment and because of that
you will have to be creative when fitting this part. Extra
length cables are provided to allow for this flexibility
Secure module and proceed to section next section.
Bluetooth Pairing and Connection
After initial pairing, the STS-HF will automatically reconnect with the paired
phone upon entering the vehicle.
1. Turn ignition and radio “ON”.
2. Red LED inside module will begin to flash
3. Access your smartphone Bluetooth menu settings, and search (scan)
for devices.
4. Select G2 and click “Connect”
Note: Supports multiple phones but connects to only one phone at a time.
Caller ID and text display are not possible in CD
Changer mode. Operating Bluetooth device is by
pressing control button and your Voice Recognition
application. Use the Becker radio volume button to
control playback level.

Bluetooth Operation
1. Set the radio to XM mode
2. Adjust radio volume
Music Commands
To
Proceed this way
Pause a Song
Press and release button
Resume Play
Press and release button
Skip to next song
Press button twice
Skip to Previous Song
Press button 3 times
Activate CD Changer Playback*
Press button 4 times
Activate Voice Control
Press/hold button for 2 seconds
Switch out of CD Changer Mode
Press and release button
Phone Commands
To
Proceed this way
Answer call
Press and release button
End call
Press and release button
Reject incoming call
Press button twice (call goes to VM)
Cancel outgoing call
Press button twice
Activate Voice Control
Press/hold button for 2 seconds
Notes:
1. If playback is distorted, adjust volume on Bluetooth device.
2. To reset Module press and Hold button for 5 seconds (this will not
un-pair phone or erase stored phones)
3. On incoming calls, ring tone will play on car speakers
4. Bluetooth range is approximately 30 ft. make sure device is within
range of receiver
5. Voice command compatible with Apple (Siri), Android (Google Now),
Blackberry (Assistant) etc.
6. * Control button does not control XM or AUX functions. Use radio
control buttons for music selection and XM controls.
7. Upon ending call, audio streaming resumes playback, however to
resume XM or AUX playback, pressed control button 4 times.
If successful go ahead and Reinstall the Radio
Congratulations, you’ve just updated your vehicle to support new technology
while preserving the original radio and dash components.
Enjoy!
Optional remote microphone Kit
The default control button has a built-in microphone (See Fig. 19)
Fig. 19
which means mounting the button in certain areas may be great for controls, but
may not so great for issuing voice commands or holding Bluetooth
conversations. The optional G2-HF kit allows for a more conventional microphone
install to visor etc. (See Fig. 20)
Package contents:
Microphone with visor clip on 10ft. cable x 1
Control button (green) x 1
Slitter harness x 1

Fig. 20
Fig. 21
Installation:
1. Use clip to secure microphone to visor or location of choice and route
cable behind the dash.
2. Connect microphone right angle 2-pin plug to “Mic input” jack on
splitter harness (note lip on mic input jack in Fig 22)
Fig. 22
1. Connect push-to-talk green or blue phone button to splitter harness
“control button” input jack in Fig.22)
2. Connect splitter male plug (“Mic” input) to module blue input jack as
seen in Fig. 23
Fig. 23
Warning: If you experience clicking sound or no audio, please refer back to the
installation steps above. The likely cause is the microphone and control buttons
connections are reversed.
Please also note, it is possible to use original control button (blue phone symbol)
with this kit

Frequent asked questions
1. Will the STS-HF work in vehicles with Navigation?
YES; works in both Navigation and non -navigation radios with XM Tuner
2. My XM subscription has expired, will the STS-HF still work?
YES; as long as the XM Tuner (Module) is present the STS-HF will work.
3. My XM subscription is active. Will it be lost upon connecting the STS-HF?
Select “ACTIVE” to retain XM playback, or expired if no plans to renew. If XM is
currently expired but plan to renew in future, select “Active” otherwise XM
will not play upon renewal.
If XM has expired, an aux input jack is provided to which you may connect and play
any audio device with a 3.5mm jack.
4. How can I verify my 2005-11 STS has required XM Tuner?
Turn Radio “ON”, press “BAND” button repeatedly to cycle through AM/FM/CD/XM.
If only AM/FM/CD is displayed, your vehicle does NOT have XM Tuner and
therefore incompatible.
5. Can I install this module without removing the radio?
NO; you must remove radio from dash to gain access to the connectors.
6. Can I use steering wheel or radio buttons to control music playback?
NO; you must use included control button or audio device built-in control and
display to access/controls
7. Will I be able to place phone calls over Bluetooth?
YES, this module supports both Hands-free calls.
Disclaimer
• This product has no affiliation with GM
• We’re not liable for misuse of this product.
•We recommend professional installation
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