Check your owners manual first for info. If the battery and what looks like a thermometer flash together there are 2 possible reasons. The first is that your coolant is low. The second is that the PCM has found a discrepency between two temperature sensors. The IAT (intake air temperature) and the ECTS (coolant temperature sensor).
Your battery light does not flash It is your low coolant light Fill up coolant and you will be fine
actually the belt tensioner went on my car and i replaced it myself in an hr or so. i just had to take off the pass tire to get at it.
check your alternator you may need to replace it and battery too, sorry
could be a bad alternator or battery
A failing alternator.
The flashing warning light may be an indication that the air conditioning system is drawing too much power from the battery. A weak battery or alternator can be the cause of this problem.
i will not have flash cause last year flash spread out the most viruses and if that happened they will lose there 10 hour battery life to 2-3 hours.
on my old 1.2 clio the battery light came on as there was fault with the alternator and it needed replacing. As far as i know the battery light comes on when the battery is not charging or there is a fault with the battery.
your alternator was never the problem. Its your battery and/or charging system. the reason the lights get brighter is because the car isn't getting the propper amount of energy from the battery and is having to directly draw off of the alternator. when the engine is rev'ed the alternator spins faster creating more current to charge the battery, witch is why the lights brighten at higher rpms.
What kind of seat belt system do you have? Check your seat belt system, as my escort does this occassionally and it has to do with the seat belts not working properly.
Battery light usually means alternator not charging. Most common solutions would be be a bad alternator, bad connection, or loose alt belt.Also check that the belt is routed correctly - I found a wrong way to route the belt and had similar symptoms.See "Related Questions" below for routing diagram sources
Do you mean they dim when you push on the gas? If yes then try having the alternator and/or battery checked. Normally the battery should be between 13 and 14.5 volts when running.
either your belt is loose or alternator is faulting out go to nearest part store and have it tested for most accurate test remove alternator from vehicle I've had that happen before and in the vehicle alternator tested good. removed from vehicle it tested bad. replace alternator no further problems
If the headlights flash on and off, there may be a problem with the bulbs or fuses. There may also be a problem with the battery connections or wiring.