Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSBUICK2013REGAL TURBO PREMIUM, STANDARD TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 152 (CELLULAR SYSTEM, ENTERTAINMENT SYSTEM, AND NAVIGATION SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC B2485CIRCUIT/SYSTEM TESTING
2013 Buick Regal Turbo Premium, Standard Trans
Circuit/System Testing
2013 Buick Regal Turbo Premium, Standard TransSECTION Circuit/System Testing
WARNING: This page is about a different car, the 2012 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
- Verify that the T4S wireless communication antenna - Bluetooth ® is properly connected to the K73 telematics communication interface control module and is not damaged.
- If the antenna is disconnected
Connect the T4S Bluetooth ® antenna to the module.
- If the antenna is damaged
Test or replace the T4S Bluetooth ® antenna
- If the antenna is connected and not damaged
- If the antenna is disconnected
- Ignition ON.
- Verify DTC B2485 is not set.
- If the DTC is set
- Test or replace the T4S Bluetooth ® antenna.
- Clear the DTC, ignition OF.
- Ignition ON.
- Verify the DTC is not set.
- If the DTC is set
Replace the K73 telematics communication interface control module.
- If the DTC is not set
- If the DTC is set
- All OK.
- If the DTC is not set
- All OK.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.