Nitrogen Canister?

[17LexusOwner]

I bought another LS400 yesterday and when I was looking under the hood I noticed something missing in the far right corner. It was a black box that I was used to seeing on my first LS400, so I took the cover off and found a nitrogen canister under there right next to the brake booster. There was a relay that said "ABS" something something on it so I'm assuming it has something to do with the ABS. What I find weird though is that the other LS that I just bought of the same year doesn't have it. It's weird to think of a Lexus without ABS....

Is that was this contraption is used for?

Here's some pics.

[SKperformance]

never seen that before but by the writing it seems european , does it look like OEM wiring?

DO you have air suspension/

[John2]

your car has traction control. that little canister is about $600 from the dealer. holds pressure on the hydraulic fluid to be used to clamp the brakes if needed w/ trac. control. i know b/c mine was leaking... many do eventually and cause the pump (right next to it) to cycle too often, throwing a 'trac' light on dash.

[amcdonal86]

John2, does this mean that the traction control function will eventually not work anymore if it is used too much (i.e., it runs out of compressed nitrogen)?

[17LexusOwner]

Thanks for the info guys.