Skip the auto shop - Our mechanics make house calls

Q: How do I replace the battery on the master key?

asked by on

How do I replace the battery on the master key?

Your Accord’s master key (the one with the built-in key fob and lock controls) needs a battery to operate. If you notice that it takes several presses of the button to get your doors to lock or unlock, it’s time to replace the battery.

Replacing the battery is easy. Here’s what you do:

  1. Using a Phillips head screwdriver, unscrew the small screw on the back of the key.

  2. Pry the two halves of the key apart.

  3. Use a coin to pry the inner cover off.

  4. Replace the old battery with a new one.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. How do I replace the battery on the master key?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Why did my car come with multiple keys?

Your car should have at least two keys, but possibly three. These are: Up to Two Master Keys: These keys can unlock the driver’s door, passenger door, trunk, glove box and rear seat trunk door. They also contain the...

Q: Accidentally hit key fob and ignition went off

The vehicles computer must be scanned to see which trouble codes have come up then an experienced technician, like one from YourMechanic, must diagnose the actual problem in this case. The codes present may not have seemed to have anything...

Q: AC leak.

The two most common leaks on these vehicles are the A/C condenser in front of the radiator and the A/C compressor leaking from the front seal. Before anything else I would recommend having the system checked for leaks by a...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.