Question about 2007 Volkswagen EOS Convertible

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Weak battery - 2007 VW EOS

Bought car new 10/06. With lots of driving and no problems, now battery is weak. Discovered no one sells a battery for this car except the dealer. Is this true? Can battery be charged up? Have 60,000 miles on car. If not, how much is a new battery for this car.

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  • sdavis950 Jul 20, 2009

    All of a sudden, the car is not starting up properly. Wouldn't start up at all. Needed a jump to get it going. It starts up with a ticking noise (that is why I though battery cause it sounded like it is weak). Never did this before.

  • sdavis950 Jul 20, 2009

    2.0 - battery under hood.

  • sdavis950 Jul 20, 2009

    No navigation system.

  • Joe Blow May 11, 2010

    Navigation System? There's talk of some Sat Nav's being replaced because they were draining batteries...

  • Joe Blow May 11, 2010

    Do you have the 2.0 or the 3.2 engine? Do you have a battery under the hood or two in the trunk? Do you have the Satellite Navigation system?

  • Joe Blow May 11, 2010

    Why do you think you have a battery problem?

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I don't think it's a battery. The ticking noise along with the dead battery leads me to believe you might have a belt/pulley issue. The serpentine/accessory belt and pulleys are all part of your charging system. It's how your alternator charges your battery. If there's something up with one of the pulleys or the belt (slipping?) in that system then your battery isn't going to charge properly. I have 6 yrs and 225,000m on my original battery in my Jetta - although I have a new alternator because the pulley fell off of mine...

Posted on Jul 20, 2009

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  • Master
  • 561 Answers

The ticking sounds like the solenoid on the starter motor poling and then due to lack of power in the battery setting back. (common indicator) to check your battery is low switch on your headlights and try to start the engine. the lights will dim or go out if the battery is low.
if they stay bright it is most likely your starter motor or other electrical problem.
so assuming the lights dim your battery is the problem.
ensure you do not have any light in the back staying on when the boot (trunk) is closed. or other electics on such as radio on mute. this will cause a battery to get low while parked.
if your battery is not being charged you will have a red battery non charge light on the dash when your engine is running.
newer batteries have a smalll window on the top which should show green if it is showing any other colour it probably needs changing.
the usual life of a battery is 5 years from new if you have bought the car second hand A previous owner may have put an old battery on the car UMMM. the date of manufacture should be on the battery also if the battery is new check if you have warrenty on it.
cost for replacement in Europe is between 60 and 100 Euro for the US i do not know more any reputable automotive supplier should be able to give you a good deal if not consult your VW dealership.
WARNING batteries can be dangerous if not handled with the correct precautions.they are also heavy and contain toxins.

Posted on Nov 12, 2009

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  • 451 Answers

Hi. The vw do make a ticking noise from low voltage to the relays. The batteries if you have a v6 are 2, 6 volt batteries. Thee are jump start poles in the engine bay, and you use a normal 12v battery charger to charge them at these posts. The batteries are available as aftermarket replacment parts, but are normally no cheaper than the dealership.

Posted on Oct 17, 2014

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