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Car won't turn on after expansion tank replacement

Discuss problems you have had or are having with your Z4
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StarSedz
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Car won't turn on after expansion tank replacement

Post by StarSedz » Sat Mar 25, 2017 9:59 pm

As simple as that, I had the battery charged at an autozone so I doubt there's a problem with that.

The dash and all the lights turn on as well as the fan.

There's a click, no other noises.

I'm going to buy and test a new battery, but does anyone know a solution?

Thanks
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raymond.harper
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Car won't turn on after expansion tank replacement

Post by raymond.harper » Sat Mar 25, 2017 10:04 pm


Rufus59
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Car won't turn on after expansion tank replacement

Post by Rufus59 » Sun Mar 26, 2017 12:15 am

Starter? Does it start if you bump start it? My starter went but it would still start if it was bumped. If you've diagnosed starter, sometimes as firm gentle tap with a mallet can un-seize it
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StarSedz
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Car won't turn on after expansion tank replacement

Post by StarSedz » Sun Mar 26, 2017 2:56 am

I had no luck with a jump start and hitting the starter didn't help,

I looked at the other post but I'm wondering if the expansion replacement was part of the problem.
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Yorkie Z
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Car won't turn on after expansion tank replacement

Post by Yorkie Z » Sun Mar 26, 2017 8:04 am

If it's not your starter it will be the ignition switch. Cheap part to replace :thumbsup:
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Scooba_Steve
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Car won't turn on after expansion tank replacement

Post by Scooba_Steve » Sun Mar 26, 2017 3:23 pm

£10 ignition switch is the cheapest first fix attempt.
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GuidoK
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Car won't turn on after expansion tank replacement

Post by GuidoK » Sun Mar 26, 2017 8:03 pm

Cheapest fix attempt is measuring with a multimeter if the starter gets any voltage on the motor and if the relais is working :wink:

Its always best to first diagnose.
My guess its worn out brushes on the starter, as he describes there's a click.

You can get the brushes seperately if the starters' commutator is still alright:
https://nl.aliexpress.com/item/Electric ... 23102.html
(swapping these brushes out when buying a used starter is also a good idea, as all these starters die after about 10-15 years from worn out brushes)
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StarSedz
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Car won't turn on after expansion tank replacement

Post by StarSedz » Sun Mar 26, 2017 8:42 pm

Thanks for the help guys, and by any chance could the car be disprogrammed from having the battery disconnected?

I had a mechanic over who told me a special tool needed to be plugged in to prevent that from happening.

I wasn't sure if that was the situation with this car, and I'll look into getting a starter.

Thanks
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