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Re: turn on the overdrive switch gear disengage
The problem is caused by the "end clutch" this is the 4th gear or over drive gear of the auto trans, it is mounted in an alloy cover on the chassis rail side of the trans, will requre removal of this cover and new clutch packs fitted, until then just drive the car with OD off, any trans shop can replace this for ya, fairly easy,
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First off.. If you have a check engine light on, Find someone with an OBD2 READER or buy one yourself(very good tool to have) and that will give you the code(s) to your problem..
If not.. Check ALL your fuses..
If those are good and you DO NOT have a sealed tranny.. Check your fluid..
If all the above check out good.. It's gonna be 1 of 2 things..
1. Your overdrive is either turned off and/or damaged.. (Over drive on: uses all 4 gears/Over drive off: uses only 3 gears)
2. Your shift silonoid pack is damaged, which normally when this happens your car goes into a thing called "dummy mode" and keeps the tranny ONLY in 2nd gear..
Now assuming your car shifts into every other gear just fine.. And the fact that normally reverse is the first gear to go out.. I'm gonna say it's your overdrive or a relay that runs with your overdrive..
Let me know what happens or if you have anymore questions..
The short answer, yes. M46 models with the type J or P overdrive (depending on year and market) require a certain level of oil in the overdrive. Additionally, the overdrive is a lot like a standard automatic transmission with one gear range in theory of operation. Therefore, the hydraulic properties of said transmission do come into play here, line pressure, shifting pressure, accumulator and piston function all work together to engage or disengage the unit. Always ensure the unit is disengaged before downshifting and of course, shifting into low reverse.
Yes when you park on an incline you should always put your emergency brake on before shifting to park. Then whenyou are ready to move again put you car in gear before disengaging the emergency brake. this will remove the stress from the transmission.
There isn't anything wrong with your car. This is perfectly normal. I have a 2000 ES300 as well as other people that I know and it operates in the same way. Overdrive doesn't mean the same thing for every car or transmission. In our case overdrive is simply a reference to the top gear which is 4th gear. When you switch overdrive off(which is depressing the button causing the O/D OFF dash light to illuminate,) the highest gear becomes 3rd because you turned 4th gear or overdrive off. The application scenario for this is usually mountainous terrain where a lot of uphill driving makes it more feasible not to up shift into 4th gear while ascending and descending. It will not switch back to overdrive or 4th gear until you re-engage it by turning the overdrive back on or repressing the button. Again, when the O/D OFF dash light is illuminated, overdrive which is 4th gear is off and the highest gear will then become 3rd. It will never shift into 4th gear while this light is illuminated or overdrive is off. When you press the button and the O/D OFF dash light is NOT illuminated overdrive is on and therefore it will shift into 4th gear as usual. This applies to all 97-2001 ES300's and probably any other car you drive tat exhibits this same type of change when overdrive is turned off.