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• Rover Metro 1993 - Alarm 6 Feb 2013 (Forum)
  How can I deactivate the alarm system? Owned car 3 mths. Advised by previous owner alarm not working. Recently charged battery and reinstalled, alarm activated car immobilised. Replaced batteries in alarm fob, which I had hoped would deactivate system. Any suggestions welcomed.
• Nissan Micra - Nissan Micra Immobiliser Problem 16 Jan 2012 (Forum)
  My 52 reg 1.0 Micra is refusing to start after the battery went flat, I charged up the battery but the red immob light is just flasing at me. Any ideas as to how to get it going as my missus is not impressed at being stuck inside! Thanks
• Peugeot 307 SW (2002 - 2008) - 04 1.6 central locking problem 28 Jun 2009 (Forum)
  My central locking won't work, either by the remote or by the key in the lock, i can't gain access, all the doors are locked and neither the car battery or the remote battery are dead. HELP PLEASE.
• Rover 100 (1995 - 1998) - 1995 1.1 Security Fob 4 May 2008 (Forum)
  I have recently bought a Rover Kensington which ran fine but now their appears to be a problem with the security fob as the ignition cct is dead. I have replaced the battery in the fob and the battery in the car is fine. Any suggestions as to solving the problem? Phil
• Rover 100 ECUs 3 Nov 2004 (Forum)
  I've been told that Rover ECUs loose their settings when you disconnect the battery. Does anyone know if this is true and if so can the ECU learn its settings again, or do I need to have it re-programmed? (I need to disconnect the battery for safety reasons when I change the fuel filter)
• Polo electrical problem 24 Oct 2004 (Forum)
  All was fine until the battery was changed.
• 1995 Rover 418 immobiliser/alarm problem 24 Jul 2004 (Forum)
  A friend left the lights on and flattened the battery this morning.Now I can\'t get the key fob to de-activate the immobiliser/alarm.I don\'t believe in coincidence but i haven\'t had a chance to eliminate the possibility of a dead battery in the key fob,your thoughs appreciated
• carina remote wont work 27 Mar 2004 (Forum)
  just bought a carina and the remote will unlock the doors but will not lock them any ideas could it be the battery? both remotes are the same i opened one up and there is a big battert and a small one i am assuming the small one is a back up do u have to be quivk in changing the battery or doesnt it matter
• 
  How often should a trickle charger be used on a car that's only used once weekly? 8 Apr 2020 (Ask HJ)
  I only use my car once a week. How often should I be charging the battery?
• Nissan Mica 2004 XS - Nissan Micra Dead Battery Help 23 Aug 2019 (Forum)
  (the car also has a keyless start function, where you press the break and twist the ignition key holder thing,which then starts the car, but as mentioned that just does not move), once I am in the car, nothing works i.e the hazard lights etc so i think the battery is completely dead Not sure what to do now as it is just stuck on the drive, and cant jump start the battery because the engine won't even turn on.  Can anyone offer any advice on what i should do to get it working or do i just need to call a mechanic to collect the car..
• Peugeot 306 1.6 Automatic Yr 2000 - Problems starting 20 Mar 2016 (Forum)
  Most grateful for any clues and help. Oh one more point, before when I have had to jump start my car before I replaced the battery if the connections were just on the car that was jump starting me and not on my battery the car started no problem, however that now is not the case, all I get now is a click.
• Vauxhall Astra - Garage / insurance advice 16 Mar 2015 (Forum)
  The electrics malfunctioned and a loud banging noise could be heard when slowing down/applying breaks on the short journey home. The car was towed away a few days later as the battery had burnt out and without the battery being charged or replaced and the car being tested a repair estimate was submitted and approved. 4 weeks later the rear end repairs had been completed but unsurprisingly the car would not start.; a new battery was required as the battery would not charge.
• Chrysler Grand Voyager - Replaced battery and now alarm wont switch off and 4 Jan 2014 (Forum)
  My 2002 Grand Voyager has been stood for a good few weeks over the Christmas and New Year period and i recently went start her up and take her for a drive but the battery was so flat there wasn't even a faint light on anywhere. so i removed the battery and took indoors and placed on charge for 24 hours, then fitted back onto the car, this is where the fun starts.........
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  Is there a fault with my Audi A4's start-stop system? 16 Aug 2010 (Ask HJ)
  I believe I have a problem with my Audi A4 Avant B8's start-stop system. Whatever I do, including switching everything including radio, lights and climate...
• Ford Focus - Focus alternator problem 28 Jun 2010 (Forum)
  - alternator casing gets very hot soon after starting engine from cold (within 1 minute) - battery voltage is around 12.5v with ignition off, around 11.5v when engine running - car appears to drive and operate fine including air-con, power steering, etc, and battery warning light goes out after starting engine.
• Battery Failing? 2001 Vaux Vectra 15 Jan 2007 (Forum)
  The mechanic told me that moving the car short distances is not good for the car in col weather - yesterday was much warmer than on that occasion. S, two questions: Is the battery failing? Is there anything associated with the throttle body that might present a load to the main battery causing a drain? Thanks for any ideas.
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  Should I leave my EV on charge while parked for two months? 6 Dec 2024 (Ask HJ)
  My Kia Niro will be left unused for two months does it need to be left on charge ?
• Mazda CX-30 - Battery problems 15 Apr 2024 (Forum)
  I am now looking for a replacement and one option is a nearly new CX-30 as I like the car very much. However, almost from new it has been exhibiting battery problems, specifically after cleaning it. Five or ten minutes with doors or tailgate open and it would not start again. This was not a case of the battery struggling to turn the engine, it was just totally dead.
• VW Passat 07 2.0TDI (DSG) - Searching for battery drain but now nothing works 2 Apr 2013 (Forum)
  I definitely let the battery disconnect a number of times, not enough hands :-( NB Every time I reconnected the battery I got a small spark, is that normal?
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  Power cut - Peugeot warning light? 19 Sep 2010 (Ask HJ)
  Having recently hired a Peugeot 207, I found the car OK except for a strange complication that I fail to understand. Sitting in the car after approximately...