Quick Answer
The direct answer describes a 9V battery being common. While some older keypads use 9V, many modern keypads, especially Chamberlain/LiftMaster/Craftsman, use AA or AAA batteries, and some Genie keypads use a coin cell (CR2032 or CR2016). It would be more accurate to mention common battery types or advise checking the keypad's manual or the battery compartment itself. Also, the phrasing 'not some cheapo from the dollar store' is unprofessional; simply stating 'use a high-quality name-brand battery' or similar is more appropriate. The rest of the advice is excellent.
Common Symptoms
Possible Causes
Step-by-Step Diagnosis
Step 1
Replace the battery with a brand new, high-quality 9-volt alkaline battery (like Duracell or Energizer).
Step 2
Reprogram the keypad by pressing the 'Learn' button on the garage door opener motor, then entering your PIN and pressing 'Enter' on the keypad.
Step 3
Test your regular handheld remote. If it works, the problem is isolated to the keypad. If it also doesn't work, the issue is with the main opener unit.
Step 4
Open the keypad and visually inspect for any signs of water damage, corrosion (green/white crust), or physical damage.
Step 5
Temporarily remove any new LED bulbs from your opener or garage and test the keypad again to rule out radio interference.
DIY vs Professional Costs
| Repair Type | DIY Cost | Professional Cost | Time Required |
|---|---|---|---|
Battery Replacement Most Common | $5 - $15 | $100 - $150 | 5 minutes |
Reprogramming Keypad | $0 | $100 - $150 | 10 minutes |
Full Keypad Replacement | $40 - $100 | $150 - $300 | 20 minutes |
When to Call a Professional Locksmith
- If you've replaced the battery and tried reprogramming it multiple times without success.
- If both your keypad AND your handheld car remotes have stopped working, which points to a problem with the main opener unit.
- If you see significant physical damage, water intrusion, or corrosion inside the keypad.
- If you've spent more than an hour on it and aren't making progress. Your time is valuable, and a pro can often diagnose and fix it quickly.
Prevention Tips
- Replace the battery annually with a high-quality alkaline battery before winter starts.
- If your keypad is exposed to the elements, install a protective cover to shield it from direct rain and sun.
- Apply a small amount of dielectric grease to the battery terminals to prevent corrosion.
- Avoid spraying the keypad directly with a hose or power washer when cleaning your garage.
Frequently Asked Questions
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