2021 Subaru Forester Owners Manual - Replacing key battery

Replacing key battery

The access key fob/transmitter battery may be discharged under the following conditions.

The operation of the keyless access function is unstable.

The operating distance of the remote keyless entry system is unstable.

The transmitter does not operate prop- erly when used within the standard dis- tance.

Replace the battery with a new one.

NOTE

Replace only with the same or equivalent type of battery recom- mended by the manufacturer.

Dispose of used batteries according to local laws.

Mount the battery in the correct orientation to prevent fluid leakage. Be careful not to bend the terminals. It may result in a malfunction.

It is recommended that the battery be replaced by a SUBARU dealer.

Use a new battery.

After replacing the battery, confirm that the transmitter functions properly.

Replacing battery of access key fob

Battery: Button battery CR2032 or equivalent

Release button

Emergency key

Take out the emergency key.

498 Replacing key battery

Wrap a flat-head screwdriver with vinyl tape or a cloth, and insert it in the gap to remove the cover.

Take out the battery using a flat-head screwdriver with vinyl tape or a cloth.

Insert a new battery with its positive (+) side facing upward as shown in the figure.

Attach the cover to the access key fob by fitting the projections and recesses together.

Replacing transmitter battery

Wrap a flat-head screwdriver with vinyl tape or a cloth. Open the key head using a flat-head screwdriver.

Remove the transmitter case from the key head.

Open the transmitter case by releasing the hooks.

1) Negative (−) side facing up

Replace the old battery with a new battery making sure to install the new battery with the negative (−) side facing up.

Put together the transmitter case by fitting the hooks on the case.

Reinstall the transmitter case in the key head.

Refit the removed half of the key head.

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Specifications

12-1. Specifications 502

12-2. Fuses and circuits 509

12-3. Bulb chart 513

12-4. Vehicle identification 516

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