Только чур, не смеяться!
Даже в более чем современном автомобиле LS600H 2008MY применяются "танцы с различными инструментами"

Например,
"... INSPECTION MODE PROCEDURE.
HINT: Before performing the Data List and Active Test of the engine with the IT or TS, be sure to put the system into inspection mode using the following procedures.
1. ACTIVATING INSPECTION MODE.
(a) When not using the IT or TS.
(1) Perform the following steps in 60 seconds.
1.Turn the power switch ON (IG).
2.Fully depress the accelerator pedal 4 times with the shift lever in the P range.
3.Fully depress the accelerator pedal 4 times with the shift lever in the N range.
4.Fully depress the accelerator pedal 4 times with the shift lever in the P range.
5.Check that the "MAINTENANCE MODE" on the multi-information display is illuminated in the combination meter.
6.Turn the power switch ON (READY).
NOTICE: If the vehicle is driven in inspection mode, the hybrid vehicle transmission may be damaged. Therefore, make sure to exit inspection mode before performing the driving test..."
В.