How to Pair My Phone With My 2005 Cadillac STS

by Michael G. Sanchez

Thanks to the "magic" of Bluetooth, a protocol that allows for wireless communication between two or more electronic devices, drivers of many modern cars can easily connect their cell phones to their vehicles' infotainment systems. This makes listening to music, making calls, and accessing other phone functions easier and safer while on the road. Circa 2014, Bluetooth is available with most new cars and trucks, from economy subcompacts to luxury SUVs.

Back in the mid-2000s, however, Bluetooth connectivity was still an emerging and fairly exclusive high-end feature. Cadillac's full-size 2005 STS sedan came standard with Bluetooth as part of its OnStar system. As long as your phone is Bluetooth-capable, connecting it to your STS is a simple, straightforward procedure.

Pairing Your Phone with Your STS

The first step is to enable the Bluetooth feature on your phone and make sure it is set to "discoverable." Next, press the "Push to Talk" button on the car's steering wheel. The will begin the connection process. The Push to Talk button is distinguished by an image of a face with speech lines emanating from the mouth.

In a few moments, a "Ready" message should appear on the car's display screen. A similar confirmation will likely also appear on your phone. Speak the word "Bluetooth" to access OnStar's connectivity setup menu. Then, speak the word "pair" to initiate the pairing process, and follow the on-screen instructions. OnStar will give you a four-digit pin code to enter and also ask you to name your phone.

Once the process is complete, your phone will automatically connect to your Cadillac's OnStar system whenever you bring it along, as long as Bluetooth is enabled.

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