Pcs light, how to fix This problem - 2009 Lexus LX 570

problem is bad AIR FLOW sensor! I am replaced in my 1.8T PASSAT with tuning chip 6.pcs air flow sensors over 3 years !!!!! All VW cars have a air flow problem!!!!! And not only this!!

first check the abs sensors--the wiring for nicks cracks or any kind of damage also check the connections they are attached to the clips[part of circuit]and connection is free of damage if good than have vehicle scanned most auto stores such as auto zone --advanced auto[check ur local area ] offer this service for free the trouble code will help direct u in repairing ur problem

Check engine light on? Sounds like a bad pressure control solenoid. If it is a bad PCS. You have to replace the solenoid block in the 5R55W transmission.

OVERDRIVE BAND IS BROKE OR TRANNY FILTER IS CLOGGED PULL PAN IF ANY PCS OF BAND ARE PRESENT YOU NEED A REBUILD

Are you seeing a check engine light ?

If, so the problem might be with crankshaft position sensor. You may have to get it replaced for $50-60

2 pcs gouge caps on engine cover where the word BMW. There is 2.pcs mather are 10mm.nut - you unscrew and remove the cover. Then unlock the fuse as lead cables where the coils are connected, all 6.pcs! Use force and pull out all up from the engine and remove coils. Now you can using 16.mm nut, long extensions and hand ratchets all unscrew! Return everything back then in reverse!
Good luck at work!

Knuckle replacement may have damaged wheel speed sensor or wiring.

PCS= Precision Control System. It is ESC - electronic stability control. The system builds on the ABS and Traction Control, and applies the brakes to reduce the risk of fishtailing. You must have been trying to drift it : ) - it was telling you it was trying to stop what you were doing. It comes on and goes off, just like a low traction light comes on in snow and ice. Normal. Unless you were just driving straight. Then you need to go to the dealer and get the codes pulled.

All are controlled by the ECM computer. I would suspect a bad ground. But wiring could be the culprit also along with the big connector in back of the dashboard. Poke around.

Your going to have to get the car scanned for the DTC code. The Check engine light indicates that the ECM has detected an issue with the cars engine or transmission performance. Your hard shifting could be the failure to the Pressure control solenoid (PCS), that would be a DTC code P1811. The PCS is located under the trans axle side cover assembly. IF you go to Auto Zone, they can scan your car free of charge and can give you the step by step instruction to replacing the part that may have failed. Good luck and keep me posted, be glad to help.