My '04 Ford focus makes a clicking sound when I turn the key, what could it be?

It's an '04 Ford focus, 4 cylinder 2.3L engine, I got a new battery about 2 months ago. 2 times recently I've gone to start my car in the morning and it makes a weird clicking sound then kicks on. It has been a little cold when it happens and I've noticed the headlights and dashboard lights sometimes dim and go back to normal when I have them on.

The starter motor may need replacing.

When you got that new battery did you clean the insides of the terminals? If you want good answers you need to explain the problem a little better like you release the key and try again and it starts or do you hold it in the start position. The little things make a difference.

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