VSC problem LS400

alehandros · January 20, 2017

Hi guys,

From time to time got VSC warning light on a dashboard. It could some sensors or wires because it happens mostly when its raining or high humidity or low temperatures outside.

Please tell me guys where to start to find what is causing this problem.

Thx Alex.

cruisermark · January 20, 2017

This is not a common problem on the 400 - I would start with simply getting your Battery checked - failing Battery cells throw up all sorts of unexplainable symptoms.

alehandros · January 20, 2017

I checked my Battery few days ago and it shows 11.7V, do u think its time to buy a new one?

alehandros · January 20, 2017

I don't know how old is this Battery, I got my LS 3 years and I never change the battery, so I gonna order a new one and see if this help

alien1974 · January 20, 2017

that is a little low voltage wise

alehandros · January 20, 2017

I agree its bit low but not dead, didnt had any problem to start the engine but already ordered new one, should arrive Monday

alehandros · January 26, 2017

Yesterday I installed new Battery and unfortunately VSC light is still on

Chasdad · January 26, 2017

On the bmw i had . After refitting a Battery the car had to be driven a while to reset the traction control light

alehandros · January 26, 2017

It was off after I put new Battery and today is up again

JIM PIKE · January 26, 2017

Hi Alex

You haven't pushed the VSC button have you and turned it off?

alehandros · January 27, 2017

No, I didn't touched that button :-D

Gorodish · January 29, 2017

I had the same issue on my LS400. Would happen all the time in the winter, rarely in the summer. Garage reckoned it was a faulty speed sensor letting in damp. It works always reset after a short drive, and a switch off/on routine, so I never got it properly sorted,

ls400lpg · May 4, 2018

did you manage to sort it?

steve2006 · May 4, 2018

First step would be to get any stored codes read from the VSV data link port, this should then guide you to what the problem may be.

There are so many inputs into the VSC/TRAC/ABS ECU that it would be very time consuming and expensive to start guessing at the cause although wheel ABS sensors are always suspect due to them being subjected to extreme conditions due to their locations but if one was faulty I would expect the ABS warning light to be on also.