Nasty Seat Belts.

[galaxy]

I figure carpet/upholstery cleanse will do the trick, but what's your technique in the absence of a steam cleaner? They're tan and disgusting. It seems like it's not gonna be an easy, nor enjoyable job.

[Rich]

The Carpet and Upholstery Cleaner will work. Spray it on, scrub it good with a brush, let it dry, use a dry brush on it, and then vacuum.  I had that same issue a while back (previous car) and that's what I used.   Worked great.  Just don't soak the seat belts.  

[Chonke]

I agree with rich. I use the carpet and upholstery cleaner on my seat belt, and scrubbed with a horse brush. It doesnt require really strong brushing, I just did a small circle motion quickly until it foams up. Then you can wipe it off and repeat until its all gone.