I just had my tires changed and the car has been lifted for alignment. Since then the PCS is flashing along with the warning sign is on. nothing related to the radar is working. Has anyone experienced this before?
my LC500 is 2018

 

was this done by the dealer? either way, something got knocked or broken.

 

Nope, not by the dealer. I just found these general guidlines on when to turn off the PCS and I highlighted below what could be the cause of the malfunctioning of the system. let's hope it is a re-setting issue.

a) Make sure to turn the pre-collision system off in the following situations, as it may operate unexpectedly or may not operate when necessary.

• When the vehicle is being towed
• When the vehicle is towing another vehicle
• When transporting the vehicle via truck, boat, train or similar means of transportation
• When the vehicle is raised on a lift with the engine running and the tires are allowed to rotate freely
• When inspecting the vehicle using a drum tester such as a chassis dynamometer or speedometer tester, or when using an on vehicle wheel balancer
• When a strong impact is applied to the front bumper or front grille, due to an accident or other reasons
• If the vehicle cannot be driven in a stable manner, such as when the vehicle has been in an accident or is malfunctioning
• When the vehicle is driven in a sporty manner or off-road
• When the tires are not properly inflated
• When the tires are very worn
• When tires of a size other than specified are installed
• When tire chains are installed
• When a compact spare tire or an emergency tire puncture repair kit is used
• If equipment (snow plow, etc.) that may obstruct the millimeter wave radar sensor assembly or forward recongnition camera is temporarily installed to the vehicle

 

How inspiring! I haven't tried towing anything with my LC yet. If only it snowed in Phoenix I would have to try a snow plow attachment.

 

Marwan, good guidelines, but did they not have any additional guidelines to FIX it? maybe disconnect the battery for a while?

 

Phoenix? Snow?

 

I did try that but no luck

 

It sounds like the kind of thank that can be fixed with a power cycle. Can you disconnect the battery for a good long time and then reconnect it?

 

I disconnected it for almost 90 mins. shall I try more?

 

In my experience that should be enough.

 

Problem Solved.
I took the car to the dealer. The lane keeping assist was programmed and calibrated. Everything is back to normal.

 

Nothing like a quick and simple fix

 

and expensive fix too
costed $400

 

where are you Marwan and i guess not under warranty?

 

This is why I always buy new and try to keep my miles and years under warranty in line with each other. Don't like to deal with unknown costly repairs.