Exit
F2.12 Rain/twilight
sensor
Rain sensor
The rain sensor (part of a single unit with the twilight sensor) operates in the infrared range and measures the
refraction caused by raindrops of a beam of light passing through the windscreen to automatically adjust the
windscreen wiper frequency in proportion with rain intensity.
The rain sensor is activated by selecting "AUTO" windscreen wiper mode with the relative control on the
steering wheel.
Twilight sensor
When the external lights are set to "AUTO" with the light control dial, the twilight sensor (part of a single unit with
the rain sensor) switches the low beam lights and the running lights on and off automatically. The running
lights and low beam lights are switched off by the twilight sensor (with the external light dial set to "AUTO")
according to the following logic:
The sensitivity of the sensor may be set via the instrument panel.
low beam lights off: upon reception of the relative command from the twilight sensor;
running lights off: 10 seconds after low beam lights are switched off.
Checking rain sensor operation
Perform on vehicle fitted with battery.
Using the relative control on the steering wheel, turn the windscreen wiper from off to "AUTO".
Check that the windscreen wiper functions automatically, commanded by the rain sensor (with a dry screen,
the system will still perform a wash cycle approximately every 5 seconds).
Wet the windscreen slightly in the area over the sensor (with a spray bottle or sponge) and check that the
windscreen wiper activates and then stops when the area over the sensor is dry again.
A rain sensor fault is indicated by a specific indicator light on the instrument panel.
Checking twilight sensor operation
Perform on vehicle fitted with battery.
Page 1 of 2
Rain/twilight sensor
8/5/2011
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Summary of Contents for 458 Italia
Page 1: ......
Page 24: ...1 7 Car Bench vehicle bench Copyright 2010 ...
Page 25: ...1 7 Car Bench vehicle bench Copyright 2010 ...
Page 26: ...1 7 Car Bench vehicle bench Copyright 2010 ...
Page 27: ...1 7 Car Bench vehicle bench Copyright 2010 ...
Page 28: ...1 7 Car Bench vehicle bench Copyright 2010 ...
Page 29: ...1 7 Car Bench vehicle bench Copyright 2010 ...
Page 30: ...1 7 Car Bench vehicle bench Copyright 2010 ...
Page 31: ...1 7 Car Bench vehicle bench Copyright 2010 ...
Page 522: ...Hook 95977564 AS 107564 for lifting the gearbox Page 5 of 5 Specific tooling and equipment ...
Page 586: ...In preparation Page 6 of 6 Engine overhaul Disassembly ...
Page 620: ...Perform the Fuel tank tightness test cycle Page 4 of 4 Fuel level sensor ...
Page 967: ...Refit the wheels D2 01 Page 10 of 10 Stabiliser bars Tie rods ...
Page 1127: ...Refit the wheels D2 01 Page 8 of 8 Wheelhouse ...
Page 1167: ...Prise out and remove the plug 4 Undo the nut 5 Undo the nut 6 Page 32 of 37 Doors ...
Page 1242: ...In the LOWEST position two movements are possible Page 8 of 12 Seats ...
Page 1243: ...In the INTERMEDIATE LOW position three movements are possible Page 9 of 12 Seats ...
Page 1244: ...In the INTERMEDIATE HIGH position three movements are possible Page 10 of 12 Seats ...
Page 1549: ...Reconnect the battery F2 01 Page 5 of 5 Starter motor ...
Page 1721: ...Charge the air conditioning system F5 12 Page 5 of 5 Condenser ...
Page 1740: ...Refit Page 13 of 13 A C unit ...
Page 1764: ...FD0001 Fuel supply distribution 0 99999 Page 10 of 56 PDF ...
Page 1765: ...FD0001 Fuel supply distribution 0 99999 Page 11 of 56 PDF ...
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