Jollytar

Under normal weather conditions summer and winter the transmission works flawlessly. But when the temperature reaches 30C/86F there's a glitch. While driving in town between 50 and 70 kph (30-45 mph) the transmission stays at least 2 gears below normal. ie instead of upshifting to D6 it stays at D4 max. Auto downshifts are more aggressive than usual. This lasts for about 20-30 minutes and then it is once again normal. Highway speeds are not affected. Anyone else experience this?

MBENZTECH

Check for the latest software update and also check the fluid level make sure it is ok.