How much transmission fluid for 97 E420 - Cars & Trucks

EGS Faults current 055 Gear comparison is negative or the target gear is not reached.
065 Component N15/3 ETC EGS Control unit faulty

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ok im shoure u checked youre fluids
so then get youre sensors checked and then if its aoutomatic check youre kick down swicth if manual could be a problem with the clucht slave or the booster bleed them it may help

Checking transmission fluid every month is necessary.
Tips on how to check automatic transmission fluid:
http://www.chinasinoy.com/service/how-to-check-automatic-transmission-fluid-97.html

Hope helpful.
Best regards.

transmission fluid goes in through the transmission dip stick with the use of a funnel

Go to the dealer and they might help you break the code for free. ask them if they are going to charge money though! because they are such a rip off.

That is were you fill it up but you will have to get a funnel to do so.

The dipstick is where you fill it =) (lol) use a funnel too, otherwise you will stain your garage floor.

Have you check the transmission fluid level? It sounds like it is low. You might not have a dipstick in that unit. I'd add at least 2 quarts and test drive it. 

There is a metal fitting bolt close to the bottom of the transmission. You can unscrew that out and if transmission fluid comes out it's good. If this doesn't occur you'll have to get a pump and pump transmission fluid in it. This is the easiest with a lift of course. Don't you hate stupid Japanese ideas. Good luck man