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katsooba katsooba is offline
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Join Date: Feb 2013
Car: 135i N55 DCT
Default N55: battery died, jumpstarted the car, now JB4 wont work - 01-30-2017, 02:36 PM

hi guys

i went on a vacation and when i came back my car battery died, so i jump started my car with another car

the weird thing is, JB4 wont work all of a sudden.

connection via USB is successful BUT there is no info on the dials, no code reading and no track down\volume down dash menus

car starts fine since, but JB4 just wont work even when my phone connects to it.

what should i do?

disconnect the - from battery for a few mins?
disconnect the - of the JB4 from the tower brace bolts?

any help would be appraciated


135i N55 / KW V3 / CP-E charge pipe / CP-E 5" ** / CP-E 7" FMIC / JB4 S2 / MHD / K&N inbox / Custom made 3.25" catback / Tons of other mods
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