Check Pcs System Warning Light, Radar Cruise Control

[Purvesh]

Hi guys, hope everyone's keeping well!

I was driving the other day and the Check PCS light has permanently come on the dash. There are some old topics which point to the radar cruise control module, but I can't find any recent DIY or any other checks I can do on this before taking to a dealer.

Can I clean anything on the module itself?

Naturally the cruise control won't work either while this error is up. I tried to remove the negative on the Battery to let it reset but doesn't seem to have cleared the system as the radio stations etc are still set.

Any advice or help would be gratefully appreciated!

[ColinBarber]

You can visually check the radar module which sits behind the Lexus logo on the grille to make sure nothing is in front of it. Other than that there isn't much you can do. Your dealer can recalibrate it if that is all the issue is otherwise it is likely to be a faulty component.

Your radio not losing presets is normal, it stores those even if the Battery is disconnected.

[Purvesh]

Hi Colin,

Good to see you're still here :)

Yeah apparently only the dealers can recalibrate it. Apparently it's common for this part to fail, it's around £700 though :/

Some have said its only a matter of time before it failed...

Not sure if it's worth trying to source a second hand part?