Question about 2004 Ford F350

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01 F-350 Diesel battery light keeps coming on. batteries are good, charging is good, and battery indicator (dash) shows good. Sometimes the truck won't start, other times it acts fine.

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Check brushes in alternator.

Posted on Jun 30, 2009

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Brake light& battery light keeps coming on now car won't start


Anytime the battery light on the dash comes on is an indicator of the alternator not charging, resulting in a dead battery. Low voltage will cause other warning lights to come on as well. Replace the alternator and fully charge the battery before running the engine, to avoid full field condition with the new alternator ( overheating).

May 13, 2017 | Cars & Trucks

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The car is a C class diesel automatic which will not start, despite charging the battery and refitting it. the dash lights are intermittent and electronic key will not move past position 2


You basically answered your own question. your problem would be the ignition switch.. If you have push button start, this would be different. It would have to go on a scanner to find the problem. Or at least where to start looking.

Jun 11, 2016 | Cars & Trucks

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Hyundai Elantra keeps dying despite my electronics being off.


Does the car crank slowly, or the starter clicks when you attempt to start it? If the alternator or voltage regulator is bad, the battery would continue to lose energy and appear to be bad. Alternators need to be fed voltage since they don't have magnets to excite the windings. On my Volvo, sometimes the indicator lights don't come on when I turn the ignition on, before actually cranking the engine. When this happens, I know from experience that the battery won't charge. Do you get any dash lights showing a problem?

You can check the voltage at the battery when the engine is running; it should be well over 12 volts if charging.

If a trunk, glove compartment or interior light is on, that can run the battery down too.

Nov 02, 2015 | 2004 Hyundai Elantra

2 Answers

In a 2002 Grand Caravan What dose the Battery looking dash light mean when it comes on and stays on? Has a new battery in it.


Hi there,

If the battery dash light remains on, it is a strong indication that you have a recharging issue. The new battery will only work if the alternator keeps it charged well. My suggestion would be to take your car to a mechanic and have your alternator tested.

Good luck.

Feb 23, 2015 | 2002 Dodge Grand Caravan

1 Answer

Sometimes the car won't start and the dash lights and the radio lights flicker


Best place to start is the positive lead on the battery . Remove the lead and clean battery pole and terminal using sand paper until you have shiny syrfaces. Replace the lead and tighten the terminal . Check the battery for charge condition as what you describe indicates a flat battery

Feb 10, 2013 | Cars & Trucks

1 Answer

Check gauge/low voltage


May or may not throw a code, have you had the alternator checked, this sounds like a bad alternator and also you charged the batteries but have them tested also, this sounds like an alternator problem.

Jan 16, 2013 | 2006 Dodge Ram 3500 Truck

1 Answer

Battery light will not operate


Check all fuses and verify no melted/damaged wires. You may have damaged something on the charging circuit by reversing the current. The battery light comes on when the alternator is not charging so I would double check the alternator at a different location as it sometimes will show good at one place and bad at another...Also have the battery checked to make sure there was no damage to it in the process and pray that the main fuse blew before any severe damage was caused.

Nov 11, 2011 | 2001 Mercury Sable

1 Answer

The dash lights keep coming on. The brake light,


This same thing keeps happening with my car. I've had the battery, alternator, alternator wore and plug changed, and the lights still keep coming on, and car keeps cutting off. I talked to someone today and they said it might be bad wiring or fuses so.... that may be it!

Feb 15, 2010 | 1989 Toyota Camry

1 Answer

I have a 1996 C180. The car is not holding charge even when driving. The battery and alternator are fine. The light for the battery is showing on the dash. I am completely stumped. Can anyone help me?...


The battery (or IGN) indicator on the dash, when lit, indicates that the alternator is not charging.

Check the battery terminals are not corroded, and the battery +12V and earth connections to the vehicle are in good order.
Check battery electrolyte lvel is ok.

Check the battery terminal voltage - it should be 13.8volts to 14.5 volts with the engine running. Switching on the headlights should not cause any reduction in that voltage while the engine is running.

The battery will not charge significantly unless the terminal voltge is in excess of 13.0V.

If all the above test ok, and the battery discharges between daily vehicle uses you may need a new battery.

Jun 17, 2009 | Mercedes-Benz C-Class Cars & Trucks

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