How Long Does It Take to Fix a Broken Antenna?
Quick Answer
15–90 minutes depending on the antenna type. A simple mast replacement takes 15–30 minutes, while a power antenna motor swap takes 60–90 minutes.
Typical Duration
Quick Answer
Fixing a broken car antenna takes 15–90 minutes depending on the type. A basic mast replacement is a quick 15–30 minute job, a shark fin antenna swap runs 30–45 minutes, and a full power antenna motor replacement can take 60–90 minutes.
Time by Antenna Type
| Antenna Type | Repair Time | Difficulty |
|---|---|---|
| Fixed mast (screw-on) | 15–20 minutes | Very easy |
| Retractable mast only | 20–30 minutes | Easy |
| Shark fin / roof-mounted | 30–45 minutes | Moderate |
| Power antenna motor | 60–90 minutes | Moderate–Hard |
| Integrated windshield antenna | Professional only | Hard |
Fixed Mast Replacement
The simplest repair is replacing a snapped fixed mast. Most fixed masts unscrew by hand or with a small wrench. You simply unscrew the old mast, thread on the new one, and tighten it. This takes 15–20 minutes including cleanup. Replacement masts are universally available at auto parts stores for $5–$20.
Retractable Mast Replacement
Older vehicles with retractable power antennas sometimes just need a new mast rather than a full motor replacement. The process involves turning the radio on to extend the antenna, removing the bezel nut at the base, pulling the old mast and its nylon cord out, and feeding the new mast and cord back in. This takes 20–30 minutes and is a common DIY fix.
Shark Fin Antenna Replacement
Modern vehicles use a shark fin antenna on the roof that houses GPS, satellite radio, and AM/FM receivers. Replacing one involves:
- Remove the interior headliner trim near the antenna – 10 minutes
- Disconnect the wiring harness – 5 minutes
- Unbolt the antenna base from the roof – 5 minutes
- Install the new unit and reconnect – 10–15 minutes
Total time is 30–45 minutes. OEM shark fin antennas cost $50–$200 depending on the vehicle.
Power Antenna Motor Replacement
When the motor assembly fails on a power antenna, the entire unit must be replaced. This is the most involved repair:
- Remove the inner fender liner or access panel – 15–20 minutes
- Disconnect wiring and antenna cable – 10 minutes
- Unbolt and remove the old motor assembly – 15–20 minutes
- Install the new assembly and route the cable – 20–30 minutes
This job takes 60–90 minutes and the motor assembly costs $40–$150.
DIY vs. Professional
Fixed mast and retractable mast replacements are excellent DIY projects requiring no special tools. Shark fin replacements are manageable for handy vehicle owners. Power antenna motor swaps can be done at home but require patience with tight fender spaces. Professional installation typically adds $50–$100 in labor.
When to Replace vs. Repair
If your antenna is simply broken off or bent, a mast replacement is all you need. If the power antenna makes grinding noises but does not extend, the motor is likely failing. If you get no radio reception despite a visually intact antenna, check the antenna cable connection before replacing the entire assembly.