(blue).
It turns on to indicate that the high beam lights are on.

Illuminates when engine oil pressure is too low. It must turn on at key-on, but must turn off a few seconds after the engine has started.
It may come on briefly if the engine is very hot, but should go out again as engine speed increases.
Important
If this light (4) stays on, stop the engine or it may suffer severe damage.
(amber
Comes on when fuel is low and there are about 4 litres of fuel left in the tank.
Illuminates and flashes when the turn indicator is in operation.
It turns on in the case of "engine" and/or "vehicle" errors and in some cases will lock the engine.

(*) Depending on the model, each calibration of the engine
control unit may have a different "setting" for the
thresholds that precede the rev limiter and the rev limiter
itself. 
Note
If the over rev function light and the dtc intervention light should both come on at the same time, the instrument panel gives priority to the over rev function.
(amber yellow)
This turns on to indicate that abs is disabled or not Functioning.
Instrument panel (dashboard)
Lcd unit functionsEngine speed-timing sensor
Introduction
The engine control system of the diavel is equipped with an inductive sensor
that allows the ecu to determine the speed
and timing phase of the engine. The sensor faces a phonic wheel with 48 teeth
minus 2.
The engine speed-timing sensor is an inductive sensor and faces a 48 ...
Inspection of the gear selector drum
Use a gauge to measure the clearance between fork pin and the slot on the
selector drum.
If the service limit is exceeded, determine which part must be replaced by
comparing these dimensions with those of new
components (sect. 3 - 1.1, Gearbox).
Also check the wear on the drum support pin ...
Trip 1 meter
This function shows the distance travelled since the trip
meter was last reset (in km or miles depending on the
specific application).
Holding the button (1, fig. 14)
pressed for 3 seconds
when this function is displayed resets the trip meter.
When the reading exceeds 9999.9, Distance tr ...