ECU reflash (Battery Charger Question)

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Davor Sule

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Vehicle: Audi A3 1.9 TDI 77 kW BKC, EDC16U1 (03G 906 016 J ver.5497)

I'm getting ready for EDC16U1 reflashing with factory .sgo file and with Abrites Avdi tool and software.

To stabilize voltage and supply the power to battery I will use Flash-mem 60 with flash mode. I don't know which option is best to set for voltage (it has 3 options: 13.8V, 14.4V and 14.8V). Also I don't know which current to choose (5A, 15A,30A and 60A)?
What else I have to look out while reflashing ECU software)?

Please can you help me with advice.

Thanks.
 
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Uwe

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I'm not familiar with the "Flash-mem 60" charger / power supply, but I would use 13.8V, which can be left connected more-or-less indefinitely without over-charging the battery.

5A probably isn't sufficient. I would go for 15 or 30A. Assuming the battery is well-charged before you start, the car will only draw however much current it needs from the charger.

-Uwe-
 
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Davor Sule

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Agree. I would go to 13.8V with 15-30A for flashing,
and for coding and diagnostic purposes when ignition is on, engine off 13.8V with 5A.
Maybe I could measure amperage when flashing to see how much draw..
 
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Uwe

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Agree. I would go to 13.8V with 15-30A for flashing,
and for coding and diagnostic purposes when ignition is on, engine off 13.8V with 5A.
Maybe I could measure amperage when flashing to see how much draw..
Flashing isn't going to consume noticeably more current than diagnostics.

5A is probably too little even for an extended diagnostics session.

Assuming the battery starts out well-charged, there's no harm in keeping the current limit set high. The only reason for low current limits is so to prevent abuse of a small, heavily discharged battery. For example if you hit a motorcycle-sized battery that's totally discharged with 60A, it likely won't be very happy about that.

At Ross-Tech, we use 20 - 30A chargers when we do extended diagnostic sessions (which is quite often). None of them have adjustable current limits.

-Uwe-
 
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smokey08

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I would use 14.4 volts and at least 30amps (it wont use 30amps, only as may as it needs to keep the voltage at what you set it so 60amps is safe) . Diagnostic wont use may amps but flashing will as sometimes the cooling fan will run at full speed.
 
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Uwe

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Diagnostic wont use may amps but flashing will as sometimes the cooling fan will run at full speed.
Good point; I didn't think about the possibility of the cooling fans coming on.

-Uwe-
 
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Davor Sule

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I understand. Do you know which current is neccessary when flashing in bdm or boot mode?
 
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Davor Sule

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DC power supply 12-14 V with 3Amps is enough?
 
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Jack@European_Parts

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Yeah should be okay once capacitors charge up & in first 100ms and provided you have security access to enter 85 mode.
 
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Davor Sule

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Do you have experience with Abrites Avdi diagnostic-programming tool on VAG vehicles and is it safe to flash EDC16 with this tool?


Yeah should be okay once capacitors charge up & in first 100ms and provided you have security access to enter 85 mode.
 
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