Garage Door Remote Not Working? What to Check Before You Call

Question 01

Why is my garage door remote not working?

The most common cause is a flat battery, in the remote or in a wall button that runs on one. It's the cheapest thing to rule out, so start there. Then look for the lock button on the wall control, a remote that has lost its code, a weak signal, blocked safety beams, or no power to the opener.

Match what your remote is doing to a row below and start at the top. The first checks cost you a coin battery and a few minutes.

The last four rows can point to a fault in the opener or its safety beams. That's when Thom comes out, for garage door repairs or a garage door motor replacement across the Sunshine Coast.

Question 02

Why is my remote not working even with new batteries?

First, check the battery is the right type and went in the right way up. Many Merlin and B&D remotes take a CR2032 coin battery, and some take the thinner CR2025. If that's fine, the lock may be on or the remote may have lost its code. B&D adds worn buttons, signal interference and trouble with the opener's receiver.

• Match the new battery to the old one. B&D says to use the exact type printed on it. A CR2032 and a CR2025 look alike, but the CR2032 is a little thicker.
• Look at the metal contacts inside the remote. Chamberlain, the company behind Merlin, says to check them for corrosion or damage.
• Press a button and watch the remote's light. Merlin's manual says the light on its remote stops flashing when the battery is low. No light at all with a fresh battery points to the contacts or the remote itself.
• Try a second remote. If that one works, the fault is in the first remote. B&D says the contact pads inside a remote can wear out over time.
• If no remote works at all, check lock mode on the wall control. That's the next question below.

Question 03

What does lock or vacation mode do to my remote?

It tells the opener to ignore the remotes. Merlin's manual says its lock feature stops remotes working while the wall control and keypad still work, which is handy when you're away. If lock gets switched on by accident, a perfectly good remote looks dead. So check it before you buy another battery or a new remote.

Chamberlain gives two signs that lock is on. The opener lights flash twice when you press a remote, or the light on the wall control keeps flashing. On its wall controls, you turn it off by holding the lock button until that light stops flashing or stays on. Other brands differ, so check the manual for your wall control.

No lock button on yours? Or lock is off and every remote is still dead? The opener may have lost its remote memory. Chamberlain says one common cause is someone holding the learn button on the opener down until its light goes out, which wipes every remote at once.

Question 04

Why does my remote only work when I'm close to the garage?

Short range usually means a weak battery or something drowning out the signal. B&D names nearby devices and thick walls. Merlin's manual adds metal doors, foil-backed insulation and metal cladding on the garage. Chamberlain points to LED light globes as one source of interference. Start with a fresh battery, then test the range bit by bit.

1. 01Put in a new battery, even if the old one isn't quite flat.
2. 02Stand right under the opener and press the button. Then move further away and try again. That's how Chamberlain suggests testing range.
3. 03Move where the remote sits in the car. Merlin's manual suggests this for a remote with short range.
4. 04Think about what's new in the garage. If the trouble started after new LED globes or another device went in near the opener, that's a likely suspect.
5. 05Still short? The opener's receiver, the part that listens for your remote, may be the problem. B&D says it might need servicing.

Question 05

Why will my garage door open with the remote but not close?

Check the safety beams first, if your door has them. Merlin's manual says its opener won't close from a remote if the light on either beam sensor is off or flashing. The beams don't affect opening, so the door still goes up fine. Clear the doorway and wipe both lenses. Then check the two sensors face each other.

Sun can do it too. Merlin says to avoid mounting the beams in direct sunlight, and Chamberlain says sun shining into the receiving sensor can block the beam. If the door only refuses to close at one time of day, that's a strong hint.

Need the door shut before the beams are sorted? Merlin's manual says that on its opener, you press the wall button once, then press and hold it until the door is fully shut. Let go early and the door goes back up. Not every opener works that way. The safety beams and auto-reverse guide covers lining the beams up and the monthly safety test.

Question 06

How do I program a garage door remote?

Most openers have a learn or program button on the motor unit. You use it with the remote's button, and the opener saves that remote. The buttons and the timing change from brand to brand, so follow the maker's steps for your model. You'll need a steady ladder, as the motor is mounted up high.

Two things trip people up. First, the remote has to suit the opener. Steel-Line says to use a remote of the same brand as your opener, since the frequencies may be different. The Merlin manual for one of its current openers says older Merlin remotes won't work with it. Second, hold the opener's learn button too long and you can wipe every remote at once. While you're up the ladder, keep your hands off the springs and cables.

Many newer openers also use rolling code. B&D describes it as a security feature that changes the access code every time you use it. Rolling code or not, a new or replacement remote won't do anything until it's coded to your opener.

Find the brand and model on the motor unit, then use the maker's own instructions:

• B&D roller door openers
• B&D sectional door openers
• Merlin support for homeowners, with remote guides and manuals by model
• Steel-Line's guide to programming your opener, plus its coding sheet for ZT07 and ZTWB remotes on SD800, SD1200, Sprint 800 and Mustang openers
• Automatic Technology (ATA) how-to guides, including how to code a remote

Just moved in? Wipe the opener's memory and re-add only the remotes you hold. The new home garage door checklist walks through it.

Question 07

How do I know if it's the opener and not the remote?

If the wall button is dead as well and the power point works, the fault is most likely in the opener. Another sign is a freshly coded remote that still won't work. Merlin's manual says that when a re-coded remote still won't work, check the opener's fault codes. On many openers, those show up as flashing lights.

B&D says a remote problem can come down to the opener's receiver, and that it might need servicing. That's opener work, and Thom does both garage door repairs and garage door motor replacement.

Weighing up a fix against a new opener? The motor replacement cost guide covers repair or replace. If the door won't move at all, read garage door won't open or close first.

Question 08

Why did my remote stop working after a storm or blackout?

With no mains power, the opener can't respond to the remote unless it has a backup battery. Merlin's manual says to plug a lamp into the opener's power point and, if it doesn't light, check the fuse box or circuit breaker. Once the power's back, try the wall button before you blame the remote.

On Merlin openers with battery backup, the manual says the opener runs slower on battery, the light stays off and it beeps about every 2 seconds. A beeping opener has its own guide: why your garage door opener is beeping.

Did you pull the release cord to get the car out during the blackout? Then the door stays unhooked from the opener until you hook it back up. The motor may run when you press the remote, but the door won't budge. The manual release and power outage guide shows how to reconnect it safely.