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Matt
Matt, Mechanical Engineer
Category: Toyota
Satisfied Customers: 20802
Experience:  BEng, Repaired my own cars and others for 20 years, worked in Formula 1 for 10 years
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Prado will not start. Battery OK. Clicking noise. Would that

Customer Question

Prado will not start.
Battery OK.
Clicking noise.
Would that be the solenoid.?
Thanks and Regards
Bob @ Not a mechanic
Submitted: 1 year ago.
Category: Toyota
Expert:  Matt replied 1 year ago.

hello

when you get a series of rapid clicks when trying to start then yes, this is the starter solenoid thumping in and out as there's not enough current to hold it in place

So if you're confident that the battery is charged then check that the main battery cables are on tight and the terminals are clean and bright. Do the same for the engine / gearbox earth strap.
Then follow the main positive lead back to the engine and down to the starter motor, and check the connection at this end as well.

There should also be a small wire to the motor which should have 12V when you're turning the ignition switch to crank. If the 12V isn't there, check back along this wire for damage to the insulation or corroded connections

This 12V feed comes directly from the ignition switch so this may be faulty and need replacing

Check the resistance of the main positive lead that runs down to the motor as anything more than a few ohms and it should be replaced

Don't forget to try a jump start from another car / battery as its possible the battery is poor, if you have a voltmeter a healthy battery should read 12.7+V

also try substituting the battery for another as I've known a very flat battery to drag down the system voltage too far even with jump cables

one other thing to consider is that the immobiliser is faulty and preventing the starter from being enabled - however if the dash / ignition lights are on then this usually means that its off

If this is all OK then its possible the car needs a new starter motor

Customer: replied 1 year ago.
Thanks for the help it is appreciated.
Bob
Expert:  Matt replied 1 year ago.

glad to help

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