J'y ai pensé car en effet ça correspondrait:
- vitesse > vitesse mini (me rappelle plus combien mais c'est 40-50 )
- position pédale entre 10 et 30% (toujours de mémoire)
- Position "D" sur le levier
Et c'est là que ça cloche ! Car si on est en 4 ou 3 le MDS est désenclenché , or j'ai aussi le problème ... C'"était trop beau mais je ne perds pas espoir.
Une vidéo du MDS
une autre
et quelques infos glanées par là...
Guidance for Mopar Hemi engine owners
If you have an MDS engine (all current 5.7 engines!), only use 5W20 oil. You need the right oil. If the owner’s manual says something else, follow its advice - but don’t be convinced by a mechanic. Insist on the right grade and if they don’t use it...get a refund and go somewhere else. (See TSB 09-015-04 and 09-013-04: “Vehicles with the Multiple Displacement System must use SAE 5W-20 oil. Failure to do so may result in improper operation of the MDS.”) Engine problems have been reported as being due to the use of the wrong oil. Usually, these problems can be resolved with an oil change, but not always.
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The oil passages are very, very small in this system and it is critical that the proper weight oil be used. If the wrong oil is used, or the engine is neglected, then these passages can get plugged up quite easily and that will cause the lifters to stop functioning, and be potentially damaged.
Virtually all isses with this system are traced to oil related issues.............neglect or the wrong viscosity.
A noter que je ne sais pas quand je suis en 4 ou en 8 donc je vais aussi rajouter un
"indicateur" qui existe sur les dernières générations mais pas sur la mienne.