Where is the mute button on a 2003 Nissan Altima car radio

The 2015 Nissan Altima does not have a mute button for the Audio system. To unmute the Audio system You will have to turn the volume knob clockwise. If this does not fix the problems with the Audio in the vehicle You can try and attempt a full reset of the radio in Your car. To do this You will turn the ignition key to the "on" position and turn Your radio on, wait ten seconds and then turn Your radio off. Depress the radio power button again and wait for reset. Alternatively, enter Your dealer provided radio code to reset. You can also check to see if You had a call and if You did not press the "call hang up" button on the steering wheel while not on a call it could mute the radio so press it again to un mute it.

You will have to ask Nissan dealer. I had same problem. Each radio has different number.

Kathy, R&R info./instructions in links below. Check the attached links,instruction and guides, Good luck
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The only place to get parts is at a junk yard of crashed cars.

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2003 is same as 2006

press th unmute button

Just fixed this myself today. There is a surface mount component (resistor I believe) that has come off inside the radio. It was labelled 180 on my radio. It is on the circuit board actually inside the radio, not the dispaly button panel, on the left side behind the volume know. I soldered it back on and now the display works again.

mute button on radio or speaker plug came loose

There are several pages on removing the correct clusters. Here is a link with an inexpensive service manual with pictures and step by step instructions. 2003 Altima Service Manual

sounds like your carb is getting to much air some where check your hoses