Anyone had the d4 light stay off

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3 times this year my d4 light went off . Still drives normal . All other lights work fine just d4 light . After 30 mins of driving work next time I get in . I have changed my gearbox filter and dexron 3 oil . Not had the flashing d4 since I done it .

I also fitted my greddy profec boost controller and running 7.2 ATM . And changed brakes all round . Blitz exhaust and k&n cone filter .
And I changed both lambda s Denso . Wonder if it could be any mods I've done .

Luckily no. If you do a

Luckily no. If you do a search on this forum on the subject this has been discussed many a time. Especially at this time of year when it's cold etc.. The auto gearbox on the YRV turbo has its own ECU which talks to the main ECU. The auto ECU will be connected up to sensors inside the gearbox itself to get an idea of the situation and when it's safe to change up and down gears. I take it you have heard the beeps when it won't downshift when using the steer shift function? With the added abuse the gearbox gets and the fact no one knew about the oil and filter change intervals then there is no surprise that these boxes start to malfunction. Your best bet if it happens again is try another gearbox oil change but then add some gearbox cleaning fluid first, drain and then another refill of dextron gearbox oil. You say you are using Dextron III? Ummm I am using Dextron VI in mine as its rated better. Horses for courses.

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'12' Plate Mazda MX-5 2.0 litre NC 3.5 Venture Roadster 160BHP
'15' Plate SEAT LEON 184 FR TDI. 240BHP/500nm Torque.
Past: '53' Plate Yellow YRV Turbo Approx. 150BHP

The car drives normal only

The car drives normal only noticed the light was out when looking at my dash everything else is normal . 1st I thought the bulb might have gone but it does relight after 5 mins parked up . I'm due an oil change in 3000miles and have 2 litres dexron 3 ready . I opted for 3 as it says in the book 2 or 3 and reading about 2 corroding wires opted for the 3 . Next time I buy some ill get 4 . Stopped the flashing d4 not had that since te filter change just light goes off . Lol thanks for the reply jpor your a ⭐️