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Why won't my Hyundai Santa Fe let me upshift if it thinks we're going too slow?

My Hyundai Santa Fe will not let me change up manually if it thinks we are going to slow. My other Tiptronic auto would let me go into any gear, even at 30mph I could put it in top gears.

Asked on 10 December 2017 by robert

Answered by Honest John
That is simply because the torque characteristics and gearing are such that the car will not run in sixth gear at 30mph. Your other cars may have had more torque at low rpm and/or lower gearing in 'top'. Another factor is keeping the DPF clear because running at revs too low will not regenerate soot.
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