the system that used to make noise when backing up used to work , now the switch that turns the system on and off has a light on all the time, anyone knows what could be wrong with it?
I found this on another website, hope this helps. "Most likely issue is the rear sonar buzzer has gone bad. This is what Nissan names the speaker that beeps when the reverse system goes off. Your light is solid because of the system fault & the system has been disabled. Here is what you do... turn your ignition forward and count approx. 3 seconds. Press your back up switch 10 times within 5 seconds and it will blink. Press it again, then press it again. The third time you press it, the light will go off and then start blinking a code at you. The first set of blinks is your tens digit, the second set is your singles digit. You will most likely see a code '21' for the rear sonar buzzer. Any other code, would relate to another part of the system, i.e. rear sonar module or each individual sensor/component switches. Sometimes it may take a few attempts to get the process correct, but this is what comes staright from the Nissan shop manual. Each time you attempt this self-test, you must turn the ignition off & open/close the door to reset the self-test."
Skip the self test. It's a bad buzzer. It needs replaced. I just did it about a month ago in ours. I purchased the OEM buzzer from the dealer, which was fairly expensive for a buzzer (around $30 I think). However it's simply unplug the old one and plug in the new one. There's a video on YouTube that also walks you through it. I highly recommend checking it out.
ok guys ,thanks for the help i will try to work with this helpful information and getback to you if i get to fix it. Thank you.
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