swital pisze: moduł na miejscu ale strzałka skrzyni świeci cały czas

Shift indicator light (Manual transmission only)
The Volvo shift indicator light (S.I.L.) is a device designed to help you get even better gas mileage from your Volvo car. Studies have shown that the best fuel economy is obtained by shifting gears at low engine rpm and high relative engine load. The Volvo S.I.L. is calibrated to show you when to shift for improved mileage without sacrificing smooth acceleration.
Use of the S.I.L. is simple. Shift to the next higher gear as soon as the light comes on. You may find after using the S.I.L. for some time that your natural shifting rhythm will adapt to the S.I.L's suggestion. Some drivers may even shift before the light comes on.

Programming instructions for shift indicator
If the current supply to the control unit is cut (battery disconnected), the control unit will have to be reprogrammed as the control unit memory will be erased.
Drive the car in each gear (first gear not necessary) for approximately 8 seconds. The gear change indicator light with flicker on (0.5 seconds), as each gear is programmed.
Note: Remove foot completely from the clutch pedal after each gear change when programming the control unit.