I have a Nissan Primera 2002. The battery appears to be fine, although when attempting to start the motor there is a click sound and no engagement of starter motor. What can be the cause of this problem.

Hello, Malcolm. It seems like you are facing an issue with the alarm system of your Nissan Primera P12 from 2002. Based on the symptoms you've described, it does sound like there might be a fault with the alarm system or the central locking mechanism.
Given that you have already tried a few troubleshooting steps such as disconnecting the battery and replacing the micro switches, it might be a good idea to further investigate the alarm system itself. Since the hazard lights are flashing without any audible alarm sound and the central locking is behaving inconsistently, there could be a fault in the alarm control unit or wiring.
One possible cause could be a faulty alarm module or a loose connection in the wiring harness related to the alarm system. It's also worth checking the condition of the alarm siren to ensure it is functioning properly.
Considering that the issue seems to have improved after disconnecting and reconnecting the battery, it's possible that there is an intermittent fault related to the power supply or a reset of the alarm system.
If the problem persists, it might be best to consult with a professional mechanic or an auto electrician who can perform a more in-depth diagnostic test on the alarm system to pinpoint the exact cause of the issue.
In the meantime, if you experience the hazard lights flashing again, try to document when and under what circumstances it occurs. This information can be helpful in diagnosing the problem more accurately.
I hope this information helps, and I wish you the best of luck in resolving the issue with your Nissan Primera P12. Feel free to reach out if you need further assistance or have any more questions.

dont have one

run the fault codes as it may be the position motor and not the position sensor.

Fix your car right away by clicking the link I attached
https://www.reliable-store.com/products/1999-nissan-primera-workshop-repair-service-manual-pdf-download

sound like you have a bad starter hit with a hamer and see if it starts if it start get it changed

could b anything try the battery first as its the easyest prob to fix if its nt that could b plugs, starter motor, fuel pump. shouldnt b anything too expensive to fix

Check the transmission neutral start inhibit switch is not the cause of your problem. (try both 'P' to 'N' positions).
If the headlights work ok there should be enough power in the battery to at least make a solenoid type noise when start is attempted- so it may not be caused by a faulty alternator.
Check the battery terminals are clean and firmly attached to the battery,
Check battery is properly grounded to the chassis and motor,
Check that +12v is available at the starter motor engage solenoid when the ignition switch is held in the 'start' position - check any start slave relay operation.
If all above is OK, you may have a faulty starter motor.

ok,first off make sure your battery isnt dead,,,if thats ok then id suspect the starter motor,,does it sound like a clicking noise when you start,,its either one or the other anyway,,,if it starts off the key when you use jumper cables then you need a new batt,,hope that helps

how much is the price for nissan primera 2003 gear box

Nissan Primera starter motor, problem was solved by ringing a local mechanic.