Skip the auto shop - Our mechanics make house calls

Q: Hood Open light comes on while driving

asked by on

When the car is moving, the ‘Hood Open’ light comes on the dashboard. But when I stop, it goes out. So I opened and then tightly closed the hood, but the light still comes on when I’m driving. What can be done to fix this?

A: You may have a faulty hood switch on your 2...

You may have a faulty hood switch on your 2004 Mercedes-Benz E500. This switch is responsible for letting the driver know if the hood is open. It is possible that the vehicle is programmed to only show the open hood warning in drive or reverse gear. This may be the case because technicians may need to be in the driver seat at some point while servicing the vehicle, and it is more convenient to leave the hood open. This feature is most likely built for the technicians who are working on the car. I would recommend having your hood switch tested by a qualified professional to determine if it is working correctly. If not, replacing this part will likely resolve your issue.

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: Air Conditioning Compressor and Condenser Replacement

No air conditioning repairs are required for the normal operation of your vehicle and they do not affect the safety of your vehicle. If your AC is still working at this time, I would recommend holding off on any repairs...

Q: Center colum under console/armrest gets very hot at times. AC and heat work fine. It gets so he that I feel it's unsafe.

This is common due to the fact that just underneath this area is where the transmission and drive train is located which generates a lot of heat. I would recommend having a certified expert, like one from YourMechanic, come to...

Q: My Mercedes has shredded two belts in a row

Mercedes uses a devilishly complicated automatic tensioner whose life span is about the same as the belt. The tensioner depends on the twisting force of a sleeve of bonded rubber to keep the belt tight, and by the time the...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...