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So I got a courtesy call from the agent’s customer relations manager today after my online feedback to their survey from the last job. She was all “oh sir I hope your car is working well now after the job”. I mean if there’s a way to make a situ worse, she checked the boxes. So I had to politely say no after which she gaslit me by asking why I didn’t bring the vehicle back to them immediately. Yup, told her I didn’t want to hear more of the, “it’s normal with these new cars. Long live the old!” that I experienced even after taking it on a test ride. She was like, “oh ok sir we look forward to welcoming you again for your next service!”. I’m lost for words.

Hi, Finally I managed to sort out my gear shift problem. 1st checked dropping resistor resistance - it was within acceptable limits ( 10~15 ohm as per service manual ) - so it's not that ( refer 1.pdf) Then checked Line pressure solenoid voltages / resistance ( 1.pdf ) - it was with in acceptable limits ( but this is after 1 ~2 hrs drive with heated ATF ) Then replaced TCU with similar model TCU ( G10 & Y11 has same TCU since both has QG15DE engine ) - but still the grear shift prob was there... So final option was to remove Control Valve Assembly in the gear box & check the Line Pressure Solenoid !!!! ( refer 2 .pdf & 3 .pdf ) Once control valve assembly is dismantled can take the solenoid valve assembly out. ( refer Page 3, 1st pic in 3 .pdf ) When the line pressue solenoid resistance was checked in dismantled form ( at that time solenoid was in normal room temp - not heated ) it was showing abnormal resistance figure...!!!! - problem diagnosed - issue was faulty line pressure solenoid .. replaced with recon one. Now no issue ... back to normal....!!!! hope this might be useful for you all. Thanks 1 AT_line pressure solenoid testing.pdf 2 Removing Control Valve Assembly.pdf 3 Control Valve Assembly Solenoids Removal.pdf