AHC, Check VSC, Hazard, Traction

[roadsalt]

2011 LX570

Hey I’m sure someone here knows what’s going on.

Happened today for the first time, after driving for 30s or so I got all the lights mentioned above. Not 4Lo and not check engine.

I was curious, by flicking into AHC low the lights went off.

Do I need to top off the AHC reservoir? Deeper issue? What’s the “easy ones” to check first.

 

[roadsalt]

Just took a 40min drive and the lights didn’t come back. Still would like to handle this.

 

[tbisaacs]

You should top off the AHC reservoir and carry a code reader.

 

[roadsalt]

You should top off the AHC reservoir and carry a code reader.

I’ve got an Obd2 but the CEL didn’t come on. It would still pull a code without it?

 

[tbisaacs]

I’ve got an Obd2 but the CEL didn’t come on. It would still pull a code without it?

Yes, VSC and AHC codes will show up regardless if you have a CEL

 

[roadsalt]

Today the brake light illuminated. A few minutes later the other ones came on. Parked did my business. Got back in. No lights. Then the brake light came on for a few minutes and went back off.

 

[roadsalt]

Topped off the brake fluid. Drove for 2 hours. No issues.

 

[PDoyle]

While your doing that make sure of clean battery connections.