Why won't my garage door open? 12 common causes

If your garage door won't open, the cause is almost always one of 12 things: a flat remote battery, a tripped power point, an engaged manual-release cord, a broken spring, a door off its track, a failed motor, or a blocked safety sensor. Start with the cheap fixes (battery, power, wall button) before you assume the worst. A snapped spring and an off-track door are the 2 faults that need a vetted Adelaide specialist, not a DIY attempt.

Start with the 5-minute checks

Before you assume an expensive fault, work through the quick ones. These fix a large share of Adelaide call-outs and cost nothing.

1. Remote battery is flat. Try the wall button. If the wall button works, it is the remote.
2. Power point is off or tripped. Check the switch and your safety switch board.
3. Manual-release cord has been pulled, leaving the door disconnected from the motor.
4. Lock mode or holiday mode is engaged on the opener.
5. Safety sensors near the floor are misaligned or blocked, so the door refuses to move.

If none of those solve it, the fault is mechanical or electrical, and the full cost bands for each repair help you budget before a specialist attends.

The 7 faults that need a specialist

Once the simple checks are ruled out, you are into repair territory. Here are the common culprits and what each one signals.

Fault	Tell-tale sign	Indicative cost
Broken spring	Loud bang earlier, door feels very heavy	$180 to $350
Door off track	Door is crooked or jammed in the opening	$180 to $450
Failed motor	Motor hums but nothing moves, or dead silent	$350 to $750
Snapped cable	Door hangs at an angle on one side	$180 to $450
Stripped drive gear	Motor runs, door does not move	$150 to $400
Seized rollers	Grinding, then a stop	$180 to $450
Logic board fault	No response to any control	$150 to $400

A broken spring is the single most common serious cause. The door suddenly feels like it weighs a tonne, because the spring (not the motor) does the lifting. Read the full guide on a broken garage door spring to confirm the signs. If the motor is the suspect instead, the garage door motor not working walkthrough narrows it down.

Why Adelaide doors fail when they do

Where you live shapes which fault you get. In the salt-air belt (Port Adelaide, Semaphore, Henley Beach, Glenelg and down to Hallett Cove), corrosion eats springs, cables and rollers years early, so coastal doors fail on hardware. Across the northern plains (Salisbury, Elizabeth, Modbury and Gawler), a large wave of roller doors fitted in the 1990s and 2000s is now hitting the end of its spring and curtain life all at once, so those suburbs see more age-related failures. In the Hills, timber tilt doors swell and bind in wet winters.

Do not force an off-track or spring-failed door

If the door is off its track or a spring has snapped, stop. Forcing it can drop the door, bend the panels, or injure you. A door under spring tension holds serious stored energy. This is the point to get matched with vetted Adelaide specialists rather than improvise.

Frequently asked questions

Why does my remote work but the wall button does nothing?

That usually points to the wall control wiring or the opener's logic board, not the door itself. Check the wire has not been pulled loose at the button. If it is intact, the fault is inside the opener and needs a specialist.

The motor runs but the door stays shut. What is that?

The motor is disconnected from the door or the drive gear has stripped. First check the manual-release cord has not been pulled. If it is still connected and the motor spins freely, the internal drive gear or belt has likely failed, which is a common and repairable fault.

Is it safe to open the door manually?

Only if no spring has snapped. Pull the red release cord and lift. If the door is very heavy or rises unevenly, a spring or cable has failed, so leave it down and get it matched to a specialist.

Still stuck? The fastest way to a fix is to get matched with vetted Adelaide specialists free and compare quotes.