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Home > Technical > Car will not start after battery replaced |
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I Like Chips Member Since: 25 Jun 2017 Location: Ascott Under Wychwood Posts: 1540 |
Try another good tested battery,don't recharge the old one |
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21st Feb 2024 4:51 pm |
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Nodge68 Member Since: 15 Jul 2020 Location: Newquay Posts: 2082 |
Was the new battery fully charged before it was fitted? Lead acid batteries need charging fully every 3 months in storage, and before being put into use. If the battery went flat in the vehicle, then it could have set CRASH mode. This could be preventing it from starting. Try shorting the battery leads together for 30 seconds, obviously disconnect and remove the battery first. This will do a hard reset, after which the battery can be refitted. When connecting the negative terminal, slap it down to the battery so it doesn't spark, as sparking from bad connection techniques cause spikes on the data lines. I'd also be checking the wiring under the glove box, where it can get knocked by passengers feet, causing issues like you are having. Hyundai Ioniq 5 Ultimate. The family car. 2009 Rimini Red SE TD4. Gone. 2006 Tonga Green i6 HSE. Gone. Audi A5 convertible, my daily driver. 1972 Hillman Avenger GT, the project. |
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21st Feb 2024 5:01 pm |
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Lightwater Member Since: 21 Aug 2014 Location: Sydney Northern Beaches Posts: 4906 |
Just because you put a new battery in doesn't mean it is any good.
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21st Feb 2024 7:38 pm |
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sid Member Since: 16 Jul 2015 Location: devon Posts: 492 |
make sure battery is good,then lock and unlock car after 10 mins,if that is not working try locking for 24 hrs then open boot first with fob then doors. |
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21st Feb 2024 10:36 pm |
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SYFL2 Member Since: 16 Jun 2012 Location: Sheffield Posts: 2594 |
Clicking relay in the passenger footwell is often the steering lock playing up,take key out move steering wheel and try again. |
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22nd Feb 2024 7:30 am |
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Lightwater Member Since: 21 Aug 2014 Location: Sydney Northern Beaches Posts: 4906 |
A bit more information on the passenger fuse box: https://www.freel2.com/forum/topic34833.html
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22nd Feb 2024 11:38 am |
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IanMetro Member Since: 11 Sep 2017 Location: Somerset BS21 Posts: 3133 |
With 'Battery Induced' Electronic Module problems, I have found that I sometimes need to 'Double Lock' the car and leave it 10 minutes or so to clear the errors.
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22nd Feb 2024 12:53 pm |
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t00true Member Since: 08 Aug 2023 Location: Twickenham Posts: 4 |
Thanks for all of your replies, they are appreciated. I return from holiday next Friday and will through your suggestions and let you know the outcome. Thanks Tony |
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22nd Feb 2024 1:22 pm |
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O-B-Wan003 Member Since: 12 Sep 2017 Location: county Down Posts: 125 |
Tony did you have any joy in resolving your issue? I have something similar which might turn out to be the starter switch or more drastically, the steering lock.
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29th Feb 2024 7:42 pm |
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t00true Member Since: 08 Aug 2023 Location: Twickenham Posts: 4 |
Further to my car not starting after the battery was replaced.
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7th Mar 2024 6:35 pm |
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Bumpf Member Since: 15 Jul 2021 Location: Perth Posts: 35 |
There is a starter relay in the engine compartment fuse box. Can you hear it activating? If you get power to the starter positive terminal then this relay is probably working ok.
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23rd Mar 2024 2:20 am |
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BossBob Member Since: 30 Sep 2010 Location: Bristol Posts: 1388 |
Is there a really good earth path back to the battery. There was a forum member that had an earth lead that had broken down inside the insulation giving random faults but the cable carried current when checked for continuity but broke down under load. All kinds of random problems were caused and 2 years of in and out of LR dealers as the car was under warranty. That eventual fix was a new design earth path from battery to chassis with an extra earth path. Many owners of older FL2’s fitted their own second earth lead from battery to starter motor bolt. |
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23rd Mar 2024 8:07 am |
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t00true Member Since: 08 Aug 2023 Location: Twickenham Posts: 4 |
Thanks for the tips on the earthing issue. I have one more session of trying to fix it with my mechanic before it goes to the JLR dealer and a hefty bill comes my way. |
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23rd Mar 2024 8:46 am |
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Bumpf Member Since: 15 Jul 2021 Location: Perth Posts: 35 |
To check for an earthing issue, try using one wire of a pair of jump leads, connecting the battery negative with a starter motor bolt. |
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23rd Mar 2024 1:39 pm |
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