[Ovmsdev] Twizy tuning disabled by Renault

[Mark Webb-Johnson]

Sad to hear, but kind of expected.

What will be interesting is if they try to update the firmware to lock down existing cars when they go in for service.

Mark.

> On 7 Dec 2016, at 9:44 PM, Michael Balzer <dexter at expeedo.de> wrote:
> 
> Hi everyone,
> 
> sorry, this is no direct OVMS issue, but as many Twizy users seem to read here, this may be the fastest way to spread this news.
> 
> Renault have disabled tuning on new Twizys.
> 
> This applies to Twizys manufactured after June 30 2016, variants T45 & T80 have been confirmed, Cargo most probably as well.
> 
> To check your SEVCON firmware, do these reads:
> 
> CFG READS 1008 0
> CFG READS 1009 0
> CFG READS 100A 0
> CFG READ 1018 3
> 
> The new SEVCON firmware version is:
> 
> Product name:
> Gen4 (Renault Twizy)Thu Jun 30 18:21:36
> 
> Hardware version:
> T45: 0x00070104
> T80: 0x00000103
> 
> Software version:
> 0712.0003
> 
> CANopen (Object Dictionary) revision:
> 0x00010021
> 
> 
> The effect is, that any write access to some tuning register will result in a CANopen general abort code 0x08000000.
> 
> Write access has been blocked selectively to just the driving profile registers. Login level still is 4 and other writes succeed, DCF download works.
> 
> The blocked registers have not been changed in the object dictionary, so this is a hard coded handling.
> 
> I currently don't see any way around this other than reflashing the controller with a previous firmware (which has not leaked up to now and cannot be read from the controller).
> 
> Of course this not only affects OVMS tuning, but all Twizy tuning boxes.
> 
> Only SEVCON tuning (CFG command) is affected, all other OVMS functions will still work.
> 
> Please spread this info to your local Twizy communities.
> 
> Regards,
> Michael
> 
> -- 
> Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
> Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
> 
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