When does the ignition warning light come on?

While it was written particularlly for the Morgans, the general theory is valid for most cars. (ED: The ignition light is used to tell when a generator (or alternator) is charging the battery. When the light is on, it means that you are running off the battery or discharging the battery.

Why do I have a problem with my ignition light?

There are several possible causes. On a dynamo it may be damaged brushes , a worn commutator or possibly faulty internal windings. With an alternator the problem may be caused by a faulty rectifier, which is usually situated inside the alternator unit.

Why does the warning light go out when I Rev the engine?

The third possible problem with a warning light is that it goes out as normal when you rev the engine slightly but comes on again as the engine speed is further increased. If the warning light simply glows dimly it usually indicates the problem is a high resistance somewhere in the warning light circuit.

Why does my ignition light flicker at low speeds?

But the light does behave in slightly different ways depending on the type of generator fitted to your car. If your car is equipped with a dynamo it is normal for the light to flicker at idling speeds as this type of generator produces little or no current at low engine speeds. The light should extinguish when the engine speed is raised.

Why does my car light up when I Turn on the ignition?

If it does NOT light up when ignition is switched on with engine not running, it implies (not proves) that something in the circuit is disconnected. In any case it does not tell you what the fault is, but it does alert you to some kind of fault so you can begin the diagnostic work (hopefully before your battery goes dead while you are driving).

Why is the warning light not working on my car?

If the lights noticeably brighten, the charging system is working and the problem lies in the warning light circuit. One possibility is that the warning light wire is being earthed somewhere along its length. Check this by turning on the ignition and disconnecting the warning light wire.

What does it mean when a car light comes on while idling?

This light should be ON when you are just standing on the ignition, but if this light appears when you are idling or driving, it means that the alternator is not charging your car battery properly and your vehicle may stop suddenly. How to solve it: To fix this problem, you have to measure the voltage the alternator is charging the battery on idle.

Why does the ignition switch light come on while driving?

This may be caused by worn out tumblers, a worn out key, or if dirt and debris lodged in the mechanism prevents movement. You can try cleaning out the keyhole, but you may need to replace the switch and potentially even replace the key to fix the problem. If this light comes on while you are driving, chances are the key can longer be verified.

What does the not in vehicle warning light mean?

Try replacing the batteries in the fob if this warning light comes on even when you have the right key with you in the vehicle. If a new battery doesn’t fix the issue, it is possible that the key has lost it’s programming and is not sending the correct code to start the vehicle.

When does the battery warning light come on?

This warning light illuminates whenever the charging system isn’t charging the battery with at least a voltage of around 13.5 volts. This particular warning can be triggered by a range of issues, so check with a professional to find out what the exact issue is before spending money on parts that don’t necessarily need replacing.

Are there charge warning lights on my car?

These Charge Warning Lights work on any vehicle where turning the ignition on connects the battery to the ignition coil (s) or electronic ignition system. NOT suitable for magneto/magdyno equipped vehicles unless connected to the charging circuit with a dedicated on/off switch.

What does the battery warning light on icm.com mean?

Turn the ignition on and the light flashes twice to tell you the unit has powered up correctly and then the light stays on (slow regular flash for combined Charge/Oil warning light). If instead it repeatedly shows two short flashes followed by one long flash, the battery is flat and needs charging

What does the battery charge warning light mean?

Battery Charge Warning Light is indicated by the symbol of Math Lego. The battery charge warning light indicates that there is a problem regarding the charging of the battery. The most common cause for a battery light to get on is that the alternator belt is broken. Another reason is the corrosion of battery posts or terminal.

Why does my battery light go out when I Turn on the ignition?

If the battery is freshly charged it can occasionally display green (for charging) when the ignition is first turned on. This is no problem and just gives you a little more information about the battery’s state of charge. If the monochrome CWLs worked in the same way, the light could go out without the engine running which would be very confusing.

What does an ignition warning lamp do on a generator?

The lamp is an “indicator” of a specific condition, but otherwise has nothing to do with actual operation of the generator or control box or battery charging (or discharging). What the lamp is doing is monitoring voltage difference between ignition switch (battery voltage) and Dynamo output voltage.

When does the ignition warning light come on?