Rear window defroster

Salutations from Serbia.

In January this year I bought used Nissan Micra k12 (2004) with 1.2 engine.
Since it was used, some things were messy and broken, but I managed to fix almost all of them. Almost as in, I can't yet figure out why my rear window defroster is not working and it is driving me nuts. I have double checked the electrical contacts on the window and they are good. Problem is, button is not reactive, as in not even LED signal light turns on when pressed. Under the steering wheel, I searched for broken fuses or relays but could not find any for rear defroster. Maybe I am missing some fuse/relay locations since I have only checked this one under the wheel?

If anyone have some suggestion, I would greatly appreciate it. Also, sorry if I am using some terms wrong, this is my first car and I am still getting used to fixing my own mess (or in this case someone else's :D)

Kind regards.
 
You could check the button.
In my case sticky button this is the front fascia.
The button is part of this but actual switch behind this button.
Try to remove the front part you will need to remove the unit as whole.
If this is the case the button would be sticking or stuck in the closed position.
If the button works correctly ignore my advice.
After reading John_D's guide my air con and rear screen heater light up.
if you need more info check here

I also had a broken connection at the window and this is a hard area to solder I still need to get the top part to solder and this can be difficult because of the glass and awkward area.

Sent from my ASUS_T00P using Micra Sports Club mobile app
 
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Salutations from Serbia.

In January this year I bought used Nissan Micra k12 (2004) with 1.2 engine.
Since it was used, some things were messy and broken, but I managed to fix almost all of them. Almost as in, I can't yet figure out why my rear window defroster is not working and it is driving me nuts. I have double checked the electrical contacts on the window and they are good. Problem is, button is not reactive, as in not even LED signal light turns on when pressed. Under the steering wheel, I searched for broken fuses or relays but could not find any for rear defroster. Maybe I am missing some fuse/relay locations since I have only checked this one under the wheel?

If anyone have some suggestion, I would greatly appreciate it. Also, sorry if I am using some terms wrong, this is my first car and I am still getting used to fixing my own mess (or in this case someone else's :D)

Kind regards.
Use a circuit tester to test for current at the rear window defroster, if you have 12 volts at the terminals glued to the rear glass you thereby eliminate the fault being anything but the defroster element itself, it may have hairline cracks which break the circuit and stop it working.

This may also be helpful, F45 & F46.
 
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OP
OP
bubanj93
Thank you both for suggestions and feedback. I will find some time over the weekend to look into the new info you guys provided. Cheers! :)
 
Mine failed, use gold paint to restore connections on the glass, L@@K very carefully at the elements to see if any are scored even slightly as this will cause an open circuit!:unsure:
 

John_D

Club Member
Radio Code Guru
The fuses for the heated rear screen is unfortunately in the 'Intelligent Power Distribution Module' (now there's an oxymoron if ever I saw one! :mad: )
K12 power distribution module.jpg
), under the L/H side head light. (15Amp fuses No45 & 46, marked 'RRDEF' in the picture above). You have to remove the headlight first . DO NOT try to take the top off of what appears to be the fuse box as it is not the top, it is the bottom, the fuses and relays are underneath (uncovered). You have to unclip the unit and invert it to get at them. You do not have to unplug any wiring as there is sufficient length of wire to allow you to flip the unit over...
 
OP
OP
bubanj93
The fuses for the heated rear screen is unfortunately in the 'Intelligent Power Distribution Module' (now there's an oxymoron if ever I saw one! :mad: )View attachment 72963), under the L/H side head light. (15Amp fuses No45 & 46, marked 'RRDEF' in the picture above). You have to remove the headlight first . DO NOT try to take the top off of what appears to be the fuse box as it is not the top, it is the bottom, the fuses and relays are underneath (uncovered). You have to unclip the unit and invert it to get at them. You do not have to unplug any wiring as there is sufficient length of wire to allow you to flip the unit over...
Thank you for this. I agree, the design is more than impractical.
 
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