Infiniti G37 Problem Report

Infiniti G37 Vehicles With an Automatic Transmission May Experience a Harsh Downshift From 4th to 3rd Gear

(8 reports)

Vehicles with a 7 speed automatic transmission may experience a harsh downshift from 4th to 3rd gear on deceleration. Our technicians tell us revised control module software is available to correct this concern. On higher mileage vehicles other faults may cause transmission shifting issues. Whenever a transmission repair is performed, the control module should be checked for the latest software and updated if necessary.

7 speed AT paddle shift G37S sedan. Car in shop with complete transmission failure. Paddle shifted to 4th decelerating on highway in the process of changing lanes to a slower lane. Stepped on the gas pedal and the best way to describe it is "dead" pedal feel. Could not accelerate above 60 mph. Manual shifting or using paddle shift to shift up/down did absolutely nothing.. car would not shift at all. Exited off highway, put it neutral on off ramp and came to stop. Prayed that car would not stall after putting back into "D" thankfully it did not. Down side only had 1st, 2nd, and 3rd gears. Called Infiniti dealer and traversed through city traffic and dropped car off. Got a call later in the day.. complete automatic transmission valve assembly needs replacement. Prior to this failure, car surged on up shifts and delayed with incredibly high revs on downshifts whether using paddle shift in D or M. -
Not fixed, happens occasionally when I slow quickly and engine seems to over rev then suddenly down shift. Almost feels like car trying to use engine to slow down vs. brakes. -
7 AT Transmission issues, I am not happy with the product at all. 2013 G 37 X S model with less than a year and issues with transmission. -
Related Items:
Vehicles equipped with an automatic transmission may exhibit an increase of engine RPM (of up t...
A "tapping sound" may develop from the drivers side of the engine. The noise may be associated...
The car also smokes when you crank it pretty bad but only if it is a cold start, and when you d...
A weak battery may result in illumination of the Check Engine Light with fault code P0603 store...
On vehicles equipped with a "foot operated" parking brake, the "brake" warning light may stay...