Skip the auto shop - Our mechanics make house calls

Q: Automatic Twilight Sentinel not working

asked by on

The Automatic Twilight Sentinel is not working on my car.

The twilight sentinel on your vehicle is composed of a light sensitive photo cell, a module, and the twilight sentinel switch which works in conjunction and parallel to the normal headlamp switch. Since the sentinel portion is not working at all,the module and the switch can both be at fault. A mechanic with access to the appropriate diagnostic information and wiring diagrams should be able to pinpoint which of those two is causing the issue. The system is also tied to the rain sensor on the windshield.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Automatic headlights not working

The automatic headlights require the sun sensor on the dash and rear view mirror to work correctly. The issue could also stem from a faulty automatic headlight switch module. I recommend having a mechanic, such as one from YourMechanic, run...

Q: door lock motors humming,

Hi there. It is very possible that the power door lock switch itself is damaged or an electrical relay is damaged, which causes a open electrical current to continually run the power lock motor. However, it could be a short...

Q: Engine blown

The two engines you refer to are absolutely identical excepting one issue that you will have to confirm: the engine used in the M45 did have a left hand versus right hand option versus starter placement. So, whatever sample you...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...