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.
Error Code: Check Antenna Is Displayed (Without Navigation) (2018-19)
NOTE:
- Check the vehicle 12 volt battery condition first - Refer to: 12 Volt Battery Test (Without SH-AWD), or 12 Volt Battery Test (With SH-AWD) .
- Check the connectors for poor connections or loose terminals.
- Problem verification
- 1. Turn the vehicle to the ON mode.
- 2. Turn on the audio system, and select the XM radio.
Is Check Antenna displayed?
YES
The failure is duplicated, go to step 2.
NO
Intermittent failure, the system is OK at this time.
- Determine possible failure area (XM antenna, others)
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Substitute a known-good roof antenna.
- 3. Turn the vehicle to the ON mode.
- 4. Turn on the audio system, and select the XM radio.
Is Check Antenna displayed?
YES
Go to step 3.
NO
Replace the original roof antenna.
- Tuner unit check
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Substitute a known-good tuner unit, and recheck.
Does the symptom go away?
YES
Replace the original tuner unit.
NO
Replace the antenna main lead.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.