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  Are you aware of a new Mercedes-Benz / BMW electric car battery exchange project? 30 Jun 2010 (Ask HJ)
  I recently passed a new factory which was not working yet. I asked what it was for and was told it is a new joint venture between Mercedes-Benz and BMW...
• 
  Well soaked 17 Oct 2009 (Ask HJ)
  Yesterday I noticed water in the rear passenger foot well of my VW Passat saloon. Year is 1999. I am not sure how it got there and I no nothing about cars...
• 16 Volt Battery Problem 22 Oct 2004 (Forum)
  It does appear that this may be a rather generous SG but I can not find my SG bulb to test it. Clearly taking the battery back is an option but if it is a SG thing then the whole patch will be like it. Has anyone else come across this new initial high voltage or is it really a duff battery. I purchased smaller Fiaam battery for another car 4 months ago and did exactly the same with that but it topped out at 14.6 volts and quickly fell to 12.8 volts.
• Battery draining itself Tommy Cooper stylee 29 Jan 2002 (Forum)
  If wiring was at fault he suggested that the alternator could act to drain the battery whilst parked. Went to work after a 40 minute drive to get the battery charged up and parked it. Checked voltage/car start every couple of hours and didn't find a reoccurence, maybe the AA man had temporarily fixed it with his fiddling?
• Volkswagen Polo - Battery issue + ABS sensor + gearbox speed sensor? 15 Jul 2024 (Forum)
    So my question is, what are the chances that the new battery alone would resolve the sensor issues, considering that fault codes have been found with the sensors? If it was a case of the battery causing the sensor issues, would fault codes still have been found?
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  Will a PHEV recharge itself when driving? 11 Aug 2021 (Ask HJ)
  Do plug-in hybrids recharge the battery whilst moving like standard hybrids?
• Vauxhall Astra - Battery Light Keeps Coming On 28 Nov 2020 (Forum)
  I've got a 2009 Astra and the battery light keeps coming on.   About a month ago, the car broke down completely - the alternator belt snapped, so I was towed home and the local garage fitted a new belt.   All seemed fine, however later that day the battery light started coming on intermittently.
• Rover 200 (1995 - 1999) - 95 1.4 Starting problems - not another new battery 4 Dec 2008 (Forum)
  I've concluded the following: a) The alternator + drive belt are fine b) The starter motor is lazy at first, but otherwise fine c) The battery is dying but is only 10 months old. A reading of 11.9V is indicative of a battery in a fair state of discharge. Do any of you agree with my diagnosis, before I trundle back to Halfords for yet another new battery?
• new battery and one-touch windows. 14 Sep 2004 (Forum)
  Went out this morning, the starter didn't even want to engage. I tried the windows, and they were very sluggish ... So, off across the road to local battery/exhaust/tyre place. Explain situation, he says no problem, we jump in his car with toolbox and new battery and back home. He disconnects battery, connects a quick charger to it, and we open the top. dead cell.
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  Why is the engine in the Nissan Qashqai ePower so big? 20 Oct 2022 (Ask HJ)
  Why is the ICE in the Nissan ePower so big, if it is only required to charge the battery? Couldn’t it be much smaller and lighter?
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  Why isn't my stop-start working? 19 May 2020 (Ask HJ)
  My stop-start engine stopped, as per normal, at a set of traffic lights - but then wouldn't automatically start again. Why's that?
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  Should I use a float charger? 16 Apr 2020 (Ask HJ)
  I've just heard about battery float chargers, is this another way of saying trickle chargers? I'm looking to buy one for my dad, who owns a BMW 1 Series...
• Ford Fiesta - Ford Fiesta mk6 - starter noise 12 Oct 2018 (Forum)
  After the machine gun noise the door locks fire. This also happened when I disconnected the negative end on the battery and tapped this against the battery node. This is a video of what is happening: https://youtu.be/EjtB31w3bXQ Thanks
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  I'm leaving my car sat on my driveway for nine weeks in winter - should I disconnect the battery? 23 Nov 2017 (Ask HJ)
  I'm leaving my 2015 Volkswagen Jetta and Volkswagen Golf on my driveway for nine weeks in winter. Should I disconnect the batteries?
• Ford Fiesta Zetec 1.4 TDCI CLIMATE TDCI - Ford Fiesta Zetec 1.4 - 05 Not Starting 24 Aug 2016 (Forum)
  I tried then tried to re-charge the battery but it wouldn't hold a charge so replaced with a new one.   With the new battery, the dash lights are come on, the red immobiliser padlock flashes one every 2 seconds.
• Hyundai i10 2009 - Fitting a new car battery these days.... 12 Feb 2016 (Forum)
  In the HJ Archive way back in 2001 (Monday 22nd October at 1409 hrs to be precise) there's a thread about fitting a new battery. http://www.honestjohn.co.uk/forum/post/index.htm?t=2204#m18757 I have the dubious honour of posting in it. Mention is made of the Draper 'Memory Saver' that you plug in to the cig. lighter socket to keep the settings during the battery swap.
• Ford Focus Estate 1.8tdci 2004 mk1 - Ford focus battery light on 16 Sep 2015 (Forum)
  Hi i replaced my alternator because it wasn't charging my battery and i broke down. Well new one fitted charging now at 13.8v and does go up when i rev, the battery is ok tested at 12.5v with engine off and holds it is the calcium type aswell. problem is my battery light still comes on, i took advice and unplugged battery for couple of minutes and reconnected, had nothing turned on for 15 minutes then started car again, the light came on again. confused it takes around 30 seconds for the light to come on every time i am not sure of the problem.
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  Battery drain on Fiat 500- what's the cause? 9 Dec 2013 (Ask HJ)
  The battery keeps draining on my daughter's FIAT 500 1.2 sport and the local dealership seems unable to pinpoint the problem . We have paid for a full...
• Ford Mondeo - Ford mondeo titanium battery drain 11 Oct 2013 (Forum)
  I have a 58 plate mondeo titanium 2 litre petrol. Had car about 6 months and battery died on me. Changed battery, all good. About 3 months later car died again and breakdown couldn't start it battery was so dead. Since then it has failed on me half a dozen times. The last time I did a 100 mile run on a thu, drove it short distance to work and back on fri, by 10am sat morning it was dead.
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  Aircon fan has a mind of its own on my 3 Series 3 Feb 2013 (Ask HJ)
  The fan goes on and off for no apparent reason on my BMW 3 Series. The final stage resistor has been changed and when working the fan goes at different...