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Calle
Member Since: 17 Mar 2008
Location: Copenhagen
Posts: 68
  
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| ECU-transmissionproblem after flat battery. |
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After a flat battery, my D3 only is able to drive in low gear. Special programs are not availebel. What do I do ?
Best regards. Calle - disguised as adult.
Discovery 3 TDV6 HSE
Ducati 750 SS
Cervelo P2
Last edited by Calle on 20th Jul 2010 7:21 pm. Edited 1 time in total
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 18th Jul 2010 5:53 pm |
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John Fair
Member Since: 03 Jan 2008
Location: Horning Norfolk UK
Posts: 178
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This is normally caused by the low battery voltage and should clear when restarted at normal working voltage n
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| 18th Jul 2010 6:48 pm |
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Calle
Member Since: 17 Mar 2008
Location: Copenhagen
Posts: 68
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Thanks for tips, but it did not work.
Must admit, that I recharged the battery with 6 amps. without unplugging the cables from the batterypoles. I read in a ciberforum, that if You dont unplug them, You may damage the ECU. Is that right ?????
Best regards Calle - disguised as adult.
Discovery 3 TDV6 HSE
Ducati 750 SS
Cervelo P2
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| 20th Jul 2010 7:18 pm |
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Trackman
Member Since: 16 Apr 2010
Location: Glasgow
Posts: 430
  
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Yes its possible to damage the ecu with a very crude battery charger. Any unregulated supply that could go over 15V could cause damage.
The battery chargers to avoid are the cheap types and anything that has a boost option as these just increase the voltage - up to 20V.
If you are using an electronic voltage controlled charger you will be ok. These can be recognised with the terms "3 stage" or "2 stage" charger.
Ian
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| 20th Jul 2010 11:54 pm |
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wiggs
Member Since: 03 Sep 2006
Location: Manchester
Posts: 14368
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Calle wrote:Thanks for tips, but it did not work.
Must admit, that I recharged the battery with 6 amps. without unplugging the cables from the batterypoles. I read in a ciberforum, that if You dont unplug them, You may damage the ECU. Is that right ?????
Best regards
It did not work ..because you didnt try it . Why ask for advise then ignore what has been given  G4 Gone ...but not forgotten
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| 20th Jul 2010 11:59 pm |
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Calle
Member Since: 17 Mar 2008
Location: Copenhagen
Posts: 68
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Hey wiggs.
Why do You think, that I did not try it. Actually I tried it 3 times after I had recharged the battery. Calle - disguised as adult.
Discovery 3 TDV6 HSE
Ducati 750 SS
Cervelo P2
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| 21st Jul 2010 9:53 am |
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wiggs
Member Since: 03 Sep 2006
Location: Manchester
Posts: 14368
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because you wrote "without unplugging the cables from the batterypoles" G4 Gone ...but not forgotten
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| 21st Jul 2010 9:58 am |
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Calle
Member Since: 17 Mar 2008
Location: Copenhagen
Posts: 68
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Had the car to the mechanic yesterday. He was not able to fix it before he had made som study. The ecu asked for calibration of the clutch and other thing. If that did not work, then it wanted af new gearbox 
Best regards Calle - disguised as adult.
Discovery 3 TDV6 HSE
Ducati 750 SS
Cervelo P2
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| 22nd Jul 2010 8:01 am |
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Calle
Member Since: 17 Mar 2008
Location: Copenhagen
Posts: 68
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Yesterday my mechanic fixed my car. He told me, that he had callibrated the clutch and made af larger opdate of the transmission ECU. Now the car is OK. I had to pay him for 3 hours work, but I am just happy that the ECU was not damaged. Price 250 £.
Incredibel that a car can be damaged just because the backdoor was open for 3 days. The car was parked in our garage, and we did not know, that the light did not shut down automaticly.
Maybe I should get a more simpel car.
Best regards Calle - disguised as adult.
Discovery 3 TDV6 HSE
Ducati 750 SS
Cervelo P2
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| 19th Aug 2010 9:54 am |
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