Why Your Mercedes GT/C192/R192 May Not Blow Cold Air to Your Feet

A curious issue has popped up among owners of the latest Mercedes-Benz GT, SL, and AMG models built on the C192 and R192 platform. The problem? The automatic climate control system doesn't seem to push cold air to the footwell vents unless you manually override the airflow settings.
One owner on MBWorld forums described the frustration: in their previous S-Class, the system would automatically mix air between the dashboard and floor vents to keep temperatures consistent top to bottom. But in their newer car, footwells stay warm unless they specifically select both upper and lower vents.
This isn't just one driver's gripe. S. owners face. The suspicion is that the car's automatic climate logic might be tuned differently on this platform, possibly prioritizing upper-body cooling or failing to recognize when the cabin's lower half needs a blast of chilled air. Other 63-series owners chimed in on the forum, saying they've never experienced this in older models, even during aggressive driving.
For now, the workaround is simple: switch your vent mode to send air to both the dashboard and footwells manually. But if you're the type who expects a $100,000-plus luxury coupe or convertible to keep your toes cool without fiddling with buttons, this is worth noting. Mercedes-Benz hasn't issued a fix or statement, so owners may want to mention it at their next service visit.
Until then, it's one more quirk of the new platform that leaves some drivers, and their feet, feeling a bit left out.
Source: MBWorld (Mercedes)
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