Skip the auto shop - Our mechanics make house calls

Q: Security light flashes when key is in key lock

asked by on

Even when the key is in the key lock, the security light flashes. There are no error codes. If I remove the plastic front cover, the key lock, and the transceiver and then insert the key the light goes out and the engine start. Is the transceiver the problem or is it something else? Thank you.

A: Hey there, thanks for writing in about your...

Hey there, thanks for writing in about your 2001 Lexus ES300h. This problem needs a professional mechanic trained in Lexus security and immobilizer systems to diagnose and resolve this problem.

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: Steering lock malfunction and key wont turn in ignition.

Your key could be stuck for several reasons. Since the steering wheel moves, it's not the steering lock. The first thing to attempt, is to use an electrical cleaner or air duster to remove any debris that may be stuck...

Q: Car won't start

This may be related to many different possibilities, some of which may be related to a lack of spark and some of which may be related to a fuel delivery problem or a combination of both. For example, if the...

Q: White smoke billows out of exhaust pipe

Hey there. White exhaust smoke is generally indicative of a blown head gasket or other conditions where water or water vapor is getting into the engine. Higher mileage vehicles are especially prone to this potential problem. Have a professional mechanic,...

Related articles

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...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...