citroen xsara II-oil light

[vasso]

hello my friends.i have got citroen xsara II 1.4l the problem is when i pull handbrake the oil light is switched on .my instrument cluster part no is[ p96364 407 80 b 02].when i tried a used one, part no[ p96432 065 80 d 00] the problem with the oil light was solved but other problems had occured.
The check engine light is now swithed on without a TDC in ECU and the indicator lights are not flashed in the instrument cluster. do you have any idea how t0 solve these problems?
thank you!

[jarecki55]

I think problem is on BSI or BSM , maybe some water damage or problem after km calibration, first step tray swap eproms on dash and look whats happen.