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• 
  How do you start a car with a dead battery? 19 Mar 2018 (Ask HJ)
  My mate's Rover 75 won't start. It keeps making a clicking sound when he turns the key and his battery has gone completely flat. It wont start and you...
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  Water damaged BMW - should the dealer pay for repairs? 6 Jun 2014 (Ask HJ)
  BMW took my car in three months ago after my ECU failed due to water damage, I paid £1500 to have it replaced and repaired. Ten days ago it failed again...
• 2008 Corsa CDTi 1.3 - ECU issues 8 Feb 2016 (Forum)
  Hi, the car wont go above 3000 revs. i put it in the garage and they are saying i need a new ECU at £850. The yellow spanner light is on but the engine management light does not come on. Everything on the car is working but it just wont go over 3000 revs. Any ideas?
• Ford Focus - ECU Charge Control Kaput 8 Mar 2013 (Forum)
  I have a friend with a 2003 Focus 1.8. The battery isn't charging (it's new) and we believe the alternator is okay. I seem to remember that the charging is controlled by an ecu and that it's a common problem for these to die. Anyone know if this is the case and what can be done to repair
• vauxhall astra cabrio - ecu 12 Feb 2012 (Forum)
  Hi i own a 02 plate vauxhall astra convertable 2.2l recently i have had lots of problems had most of them fixed bar one witch is a fault on the ecu coming up as a faulty sensor but my car wasnt made with the sensor thats faulty any advice would be great
• Ford Focus 1.6 TDCI 2005 - power supply relay for ECU 4 Jul 2010 (Forum)
  Hi, Further to my earlier post today, does anyone know where the power relay for the ECU is on this car. Ive looked in the Haynes manual and it only mentions a 'power hold relay' in the pre-heating circuit and was wondering is this the same thing? Regards
• suzuki alto ecu 17 Mar 2007 (Forum)
  my suzuki alto was towed into a suzuki main dealer by the aa as a none starter(aa man said no fuel being delivered fuel pump working though)after 3 hours labour they said ecu was the problem.with them knowing about the car as a main dealer for suzuki and having all the latest diagnostic machines
• Renault Kangoo ECU code 8 Mar 2005 (Forum)
  I have had my ECU on my V reg 655D Kangoo read and have a code of 510. The guy who read it said he cant find what it means, anybody got any ideas? Basicly the Van begins to stutter after start up but does not cut out. Thanks in advance.
• Vectra 2.0dti ECU light at idle 30 Apr 2004 (Forum)
  Hi, I've recently been getting my ECU light coming on when I've been driving and then come to a standstill(eg, at lights). The light goes back out again when I start to move again. Any ideas? My car is a Vectra, S-Reg, 2.0DTI with 115,000 miles on it. Reesky
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  Jaguar XF - can I remove the DPF? 16 Nov 2014 (Ask HJ)
  I keep getting a DPF warning light on my 2008 Jaguar XF. Can I have it removed and have the ECU remapped? I've found lots of websites offing this service....
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  Is the ECU unit on the B-Class a common problem? 29 Sep 2014 (Ask HJ)
  Is the ECU unit on the Mercedes-Benz B-Class a common problem with CVT gearboxes?
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  Does this Citroen Picasso have a Bosch or Siemens injector system? 24 Aug 2010 (Ask HJ)
  How do I check if a Citroen Picasso I may purchase has the better Bosch ECU injector system or the Siemens one?
• Vauxhall Astra G Diesel (1998 - 2004) - 02 2.0 ECU/Fuel Pump 4 May 2008 (Forum)
  When my Astra (2.0 tdi 2002) warms up the rev needle drops to zero and it starts idling. A diagnostic check later and one mechanic claims that the fuel pump needs replacing as does the ECU and another says its the ECU and faulty speed sensor. The total cost of repair (from each mechanic) is about
• golf gti 1.8 turbo ecu(2000)eng.code agu 22 May 2005 (Forum)
  I recently bought a second hand ecu for my golf that i would like to keep as a spare. However i would like to test it on my golf to be happy that it is a good unit.I have connected it to my car but when i switch on the ignition the message 'immobilisor activated' appears on the dash and the engine
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  Electrical faults with Mercedes C-Class 21 Jul 2013 (Ask HJ)
  The windows on my Mercedes-Benz C-Class have ceased to open or close with the key fob. The driver’s side heated mirror also switch on every time I start...
• Vauxhall Zafira - ecu problem 15 Jul 2011 (Forum)
  working also the cooling fan kept running all the time although the engine was not hot at all, then the next day it would not start at all , my friend did another check with his reader but it came up with an error message " conection failed, we tryed several times but cannot seem to connect to ecu , does
• Vauxhall - Vivaro - 03 1.9 ECU location and removal 20 Jan 2009 (Forum)
  dealer has told us it was the ECU so im going to take it out and send it away myself to get sorted as its much cheaper than they have quoted. The van is still in the garage but im just going to go and get the ECU out myself, so want to do it as quick as possible. Any help on where to find the ECU
• Renault Laguna II (2001 - 2007) - 2001 1.6 ECU problems 13 Aug 2008 (Forum)
  the ECU had developed a fault and could not be repaired. I now face a hefty bill from a Renault dealer for the repair as the garage who did the service say the fault is a coincidence and not caused by anything they did, but I'm not so sure. Should this screw have been adjusted as I believe it is factory
• mpg and 'learning' ECUs 26 Sep 2006 (Forum)
  The thread by Westpig got me thinking. In modern ECUs, some of which are purported to be of the 'learning' type, how long does it take for fuel consumption to stabilize at the new driving style? If my Mondeo TDCi 5-speed has such an ECU (correct me if I'm wrong), then I have this evidence
• Vauxhall Vectra C (2002 - 2008) - 03 1.8 ecu probs on my vectra? 4 Mar 2009 (Forum)
  that code) engine ecu road tested to identify fault,rechecked for fault codes,only one code stored p1600 for replace ecu-requires new ecu £587.65 fitted oil leak from sump both front drop links worn nail in o/s rear lip on both front discs so had a really good day ......lol questions 1. so whats wrong