Results 1 to 7 of 7

Thread: Is it the ECU?

  1. #1
    Junior Member
    Join Date
    Jul 2019
    Location
    Swansea
    Posts
    3
    Post Thanks / Like

    Is it the ECU?

    Good morning all,

    This is my first post (hence my user name)

    A couple of weeks ago, the battery in my diesel VRS was completely flat, when I tried to start it, after being on holiday for two weeks. I got it jump started and immediately took it on a round 40 mile motorway round trip. It seemed to hold it's charge OK, but as the days progressed, it just about started, due to the battery being flat again. I then drove to London and back, and for the rest of the time, when being used daily, it started fine. I had the battery and alternator checked, as well as having it plugged into a diagnostic machine, and all was well. On Monday (8th), when I tried to start it, after not having used it over the weekend, the battery was completely flat again. So, the breakdown service (not AA or RAC, unfortunately), were called out again. The battery was checked as I turned the engine over, and the volts dropped to 9, from 12 (I don't know if that is normal). It was jumped again and, although the engine started, it cut out almost immediately. It did this each time. The fan kicked in immediately, and was going at 100 mph, many fault lights came on and the central display became almost invisible. I had it towed to my local garage, not a dealer, who plugged in the diagnostic machine. Nothing appeared on it, and so he put it down to the ECU. Even though I put a new battery on the car, which helped it to turn over properly, it continued to cut out, within seconds.

    Because my car is just over 3 years old, ECU repair specialists don't even have data on their system to check it. Because I have already been towed, I can't be towed again. So, my dilemma is; do I take a chance and just send away the ECU to be tested and, hopefully repaired, and all will be fine. Or have any members had this same problem themselves, and know the cause? BTW, I forgot to mention that my mechanic did wonder if the jump leads had been put on the wrong way round, and blew the ECU.

  2. #2
    Senior Member The Hood's Avatar
    Join Date
    Mar 2016
    Location
    Berkshire
    Posts
    277
    Post Thanks / Like
    Not knowing how dependant on your car you are I would go through the least costly option first, Skoda fit the least expensive battery possible to a new car. If you have stop/start you will have a special battery which is coded to the ecu, so it is maintained correctly and if need be the ecu will disable stop/start. With modern cars even jump starting has to be done a special way, if you have a handbook it will probably tell you not to use the battery negative terminal.

    If the car was left standing for two weeks there would still have been a drain on the battery with some of the elctronics still active, alarm, internal sensors etc. A 40 mile round trip would not have put much back into the battery which would then have had the constant drain on it again when parked up. Do you have access to a charger (if you have stop/start you will need a certain type of charger than can dealt with a glass mat battery) so it could be on a steady charge for a couple of days rather than "cook" it? Either disconnect both leads or remove the battery completely and ventilate it well.
    If when charged the car runs and some of the lights go out (don't know which ones are on and if they would need to "cleared with VCDS) you need to check the resting voltage of the battery to see if it is failing, and to check there is nothing which is not switching off when it should (boot light?). If you have stop/start and fit a replacement battery it may need to be coded to the vehicle so the ecu "knows" how it should be charged and maintained. If this makes no difference you have not spent much, if you send the ECU off and it is O.K. it will have cost more and the problem will still be there.
    Hampshire and Berkshire 4x4 response "Classic" Aqua Blue 140 BHP Elegance 4x4, Park assist,RRP,Spare Wheel.

  3. #3
    Administrator Crasher's Avatar
    Join Date
    Aug 2013
    Location
    Nottingham, England.
    Posts
    689
    Post Thanks / Like
    I am more included to think it is the dash which has been damaged as the engine runs but is clearly not receiving the immobilser run command from the dash but the fans going crazy also tells me that something else has been damaged because the fans are seeing the ignition is on but not an ECU temperature signal so they are programed to go into overheat mode just in case, did the breakdown people use jump leads or a starter pack? I won't even allow jump leads on the premises and when out and about if I see someone using them I can barely stop myself screaming NOOOOOOO!
    2003 Skoda Octavia VRS Estate. APR 98RON remap, APR R1 diverter valve, Jetex exhaust, K&N panel filter, 7.5x18 Alutec Monstr wheels with 225/40 18 Uniroyal Rainsport 3 tyres.
    2006 Polo GTI 1.8T, APR 95RON remap
    1988 Golf 2 GTI 16 valve, 2.2 with Weber Alpha injection
    1983 Golf 1 GTI 8 valve, 2 litre with Eurospec racing 42/36 head
    1972 1302LS auto 1641cc conversion

    Vile Invention

    Dark was that day when Diesel conceived his grim engine that begot you, vile invention, more vicious, more criminal than the camera even, metallic monstrosity, bale and bane of our culture, chief woe of our Commonweal. How dare the Law prohibit hashish and heroin yet license your use, who inflate all weak inferior egos? Their addicts only do harm to their own lives: you poison the lungs of the innocent, your din dithers the peaceful, and on choked roads hundreds must daily die by chance-medley. Nimble technicians, surely you should hang your heads in shame. Your wit works mighty wonders, has landed men on the Moon, replaced brains by computers, and can smithy a "smart" bomb. It is a crying scandal that you cannot take the time or be bothered to build us, what sanity knows we need, an odorless and noiseless staid little electric brougham.

    W.H. Auden (1907-1973), A Curse:

  4. #4
    Junior Member
    Join Date
    Jul 2019
    Location
    Swansea
    Posts
    3
    Post Thanks / Like
    Hi Guys,

    Thank you for your replies. Both of the suggestions are food for thought. Re: jump leads or starter pack. On both jump starts, a starter pack was used.

    I have some good news, however. At the start of the week, at the suggestion of my son, I sent an email to Rod McLeod, Head of Skoda Uk, explaining my problem. To my surprise and delight, today I received an email from his PA, apologising for my situation, and informing my that my case has been given priority to the Skoda Customer Resolution Team. They will be communicating with me, shortly. That sounds very promising!

    I'll come back on here and tell you what the outcome was.

    Thanks again, for your suggestions.

    Mike

  5. #5
    Senior Member The Hood's Avatar
    Join Date
    Mar 2016
    Location
    Berkshire
    Posts
    277
    Post Thanks / Like
    That sounds promising keep us updated
    Hampshire and Berkshire 4x4 response "Classic" Aqua Blue 140 BHP Elegance 4x4, Park assist,RRP,Spare Wheel.

  6. #6
    Junior Member
    Join Date
    Jul 2019
    Location
    Swansea
    Posts
    3
    Post Thanks / Like
    Hi Guys,

    Well, my problem has been resolved, and a big up to Sinclair Skoda, Swansea and to Skoda UK.

    It was found that the problem lay with the Gateway Control Unit, which is the piece of kit that the ECU talks to. Unfortunately, Milton Keynes didn't have one in stock, so it had to be sent from the Czech Republic. As that may have taken up to 10 days to arrive (pre Brexit), and I needed a car to drive to Woking and Chislehurst last weekend, it was arranged that I could have a hire car. As the warranty on mine had expired, it would normally not be possible for me to have a hire car for free (all the courtesy cars had been booked out). Skoda UK stepped in at that point, and authorised that to happen. I chose a Tiguan, which is a lovely car to drive, and may be my next purchase.
    The car is ready now, and as a gesture of goodwill, Sinclair have said that they will reduce my contribution by 60%, and so the cost to me will be £120. Under the circumstances, I feel that is a pretty good outcome. In addition, my battery, which is only 7 months old, but had been going flat, is still under warranty, so that will be replaced, as well. I'll be collecting my car, shortly.

  7. #7
    Senior Member The Hood's Avatar
    Join Date
    Mar 2016
    Location
    Berkshire
    Posts
    277
    Post Thanks / Like
    Good to hear your problem has been solved, even better to hear Skoda almost admitted it was not your fault.
    Hampshire and Berkshire 4x4 response "Classic" Aqua Blue 140 BHP Elegance 4x4, Park assist,RRP,Spare Wheel.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •