What can be more distressing than noises when you start your vehicle… In fact, you probably previously found out noises when you start your Lexus CT and usually it’s frustrating. It may not be anything critical, but each new engine starts usually becomes a scary moment during which you don’t know if your engine will start. That is why our editorial staff has made the decision to create this document to help you find its origin. To do this, first, we will see the case of noise when starting on Lexus CT but the vehicle does not start, and finally, the noise you can encounter on your vehicle if it starts, first cold and then hot.
I hear a noise when I try to start my Lexus CT, but the engine doesn’t start
I find out a clicking noise at the start of my Lexus CT
If you hear a noise when you want to start your vehicle, and it does not want to turn on, it is very likely that it is the battery that is causing the issue. In fact, if you perceive clicking noise when you start your Lexus CT, and it sounds like a ticking, you probably lack the energy to run your starter, check your battery with a voltmeter and change it if required. In the case that after verifying your battery, you still experience a noise when starting your Lexus CT and it does not want to start, consult this content about starter motor noises on Lexus CT for more info and to discover the origin of your issue.
I perceive a noise when I start my Lexus CT but the engine it starts
I hear a noise when I start my Lexus CT
- Grinding or squealing type noises when I start cold Lexus CT :
If you hear a noise when you start your Lexus CT, and this noise sounds like grinding or squealing noise, which can also be relating to vibrations, it is conceivable that it is the combustion of your vehicle that is involved. In fact if you have an air/fuel mixture that is not good the normal performance of the engine will be altered. Check the condition of your injectors and air intake system. For more info on the source of injection-related noises on Lexus CT, check out this article. - Cold start friction parts Lexus CT :
If you perceive cold friction noises on Lexus CT, it is almost certain that they come from one of your belts. Either the serpentine belt starts to wear out and therefore triggers a friction noise. It is also conceivable that the tensioner roller or damper pulley is worn out and that as a result the extension belt provoke a friction noise, often when cold. Visually check your belt and change it if needed. If you have other friction noises, and it doesn’t result from your serpentine belt, we have a full content on engine of your Lexus CT.
I hear a noise when starting my Lexus CT even when hot
- rubber mount / silent bloc dead motor
If you hear a clacking noise just when you start your car’s engine and it is more than 100,000 km long, it is conceivable that some of your engine silentblocks or rubber mounts are expired. And the huge vibrations produced by starting the engine can generate starting noise on Lexus CT. Check their condition and replace them if needed. Read this content if you would like to have detailed info on rubber mount noises on Lexus CT. - Motor flywheel
Finally, if you hear a noise that sounds a little like a crank noise when you start your Lexus CT, even when hot, it is conceivable that if your series is equipped with a dual-mass flywheel, it is the origin of your concerns. In fact, these parts have created a lot of concerns on many automobiles. When they take part in the game they generate noise when you start your Lexus CT and when you turn off the engine. Have his condition inspected by a specialist.
