Question about 2006 Lexus Ls 430

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Recently a warning light went on and a message said check pcs system. how do I check on where the problem is. Possibly it is in the radar sender behind the grill.

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"Pre Crash Safety" system. May be as simple as a dirty lens on the radar in the front, it may be as complicated as the entire system being fried. Try to clean the radar and check all wiring, maybe that will be enough.
The only way to know it for sure is to take the car to a dealer and test it.

Posted on Jul 28, 2010

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Posted on Jan 02, 2017

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I have a 2015 volkswagon passat. And the low oil light keeps coming on and I checked the oil yesterday and the light went off and came back on today. But it's not the oil pressure light. ?


Keith, it probably is the oil pressure light.

Low oil level causes low oil pressure. But, as you say .. your oil level is okay. It may be the oil pressure sender which is at fault. There's every possibility that your oil pressure is fine, but the sender is sending a false signal to your dashboard which gives the 'low oil level' warning light.

Get the mechanic at your local dealership to stick his head under the hood. You'll get a diagnosis in seconds. I don't think you have too much to worry about .. just that 'low oil level' warning light is a bit unsettling ..

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You can't reset the tire pressure warning light (TPMS), when the pressure is adjusted or the sensor replaced (if the warning is false) the light will go out, there is no reset. Check the air pressure in all the tires, they should be about 34 PSI all around.

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It is possibly a flat battery in one or more of the sender units in your wheel or it may have a damaged sender unit if you have had new tyres fitted recently take your vehicle back and have them rectify the problem

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If oil pressure sensor is bad could it damage my vehicle further


It's a warning light system that no oil pressure exists. If it doesn't work, it won't cause damage, you just won't know if and when your oil pressure is lost. The sensor or sender unit is very inexpensive on most vehicles, like under $10.
All the sender does is cause the oil light to go off when it detects minimal pressure. A valve inside the sender moves and causes the sender to stop grounding the warning light, and so the light goes off.

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1 Answer

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test the faulty lamp , turn on the ignition switch to the START position The providing circuit shoudl ligh the warning lamp. If hte light does not come ON during the porve/out, disconnect the sender switch lead. Use a jumper wire to connect the sender switch lead to ground . With the ignition in the RUN position, the warning lamp shoud light. If the lamp is iluminated, replace the sending swith. If the light does not come on, either the bubl is buned out or the wiring is damaged.
God bless you

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1 Answer

The warning light fo the oil keeps staying on even after putting oil in it


The warning light is for oil pressure.

First check the dipstick, make sure there's enough oil in the engine.
If so, then there may be a problem with the oil filter, when was it last changed.
It could be the sender, is the connection good and clean.
Finally the oil pump filter may be blocked, or possibly the oil pump has failed.

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1 Answer

My 1996 audi A6 has an oil sending unit problem...can you tell me what that might take to fix and why would this show leaking oil? I thought this part was inside the oil pan?


The oil pressure sender unit is located on the oil filter housing.These do tend to leak at times. The warning light for this switch is a red oil can and a buzzer. Replace the switch. If warning light still comes on, have the oil pressure checked. The oil level sender warning light is an orange oil can with oil level under it. This sender is fitted on the bottom of the oil sump and can leak past the seal. If warning light comes on, check oil level. If ok, check for damage to wiring under vehicle. Senders do some times become faulty.

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1 Answer

BMW 318iSE (1999) engine warning light


That sounds like you bought big problems. Oil ights indicate low oil pressure= BIG BUCKS. I would have a qualified repair shop check it out, A shop that specializes in BMW. If you are lucky, maybe the oil sender is just bad. They can also check out the Ck eng light. But the oil light is priority one.

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1 Answer

I have a 2002 Cherokee 2.4 sport petrol engine Jeep. Recently the oil warning light ( red) on the dash board stays permanantly on. The oil level checks OK and the engine appears to be running OK. Could it...


Oil pressure sending unit should be located somewhere near the oil filter. check that the wire is attached to it and is not grounded. If engine is not making any tapping noises chances are that the sender is bad. If after changing it, the problem persists, put a mechanical gauge on the system (attach where sender is) and read actual oil pressure (should be no lower than 15psi when hot but I prefer better than 20 hot at idle, 40-50 running at 2000rpm)

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