E240 2003 2.6 Auto Estate Gearbox Problem

[tedsy]

Hello,
I have a 2003 E240 2.6 Auto Estae. 90,000 miles One owner full merc service history from new. Just passed the MOT and now the gearbox is playing up.

Once or twice a month it starts having a clunky gear change,then its fine again.
I have had the code reads - Transmission place says with the codes its likely the seals have gone in the radiator meaning water in gearbox,hence slipping transmission.

£2,500 for gearbox and radiator change!!!!!

Any cheaper options greatly appreciated..........

 

[4life211]

Have you checked for coolant in oil ?
Remove the conductor plate and wash it with electric spray.

 

[tedsy]

Excuse my complete ignorance of the witchcraft of automatic gearboxes, how would cleaning the plate help?

 

[DSM10000]

Contamination from coolant in the fluid or just old fluid that is breaking down can cause electrical issues.

There is a chemical test available that will show if there is contamination of coolant in the ATF.

When was the fluid last changed?

 

[gusmagoo]

When was the fluid last changed?

Most people don't know anything about changing gearbox oil.
I've heard that Mercedes don't even recognise that it should be done?:fail
ZF say it should be done after 75000 miles but Merc say it's "same oil for life of vehicle" clearly estimating vehicle life at less than my 180k estate!

 

[DSM10000]

Most people don't know anything about changing gearbox oil.
I've heard that Mercedes don't even recognise that it should be done?:fail

I am not sure how this is helping the OP?

MB now have a recognised ATF replacement schedule, it has changed the recommended mileage intervals over the years though.

 

[gusmagoo]

Well he may not even realise that you can change the oil... That's my point...
I have heard that just doing that can sometimes solve problems though...

 

[DSM10000]

Most people don't know anything about changing gearbox oil.
I've heard that Mercedes don't even recognise that it should be done?:fail
ZF say it should be done after 75000 miles but Merc say it's "same oil for life of vehicle" clearly estimating vehicle life at less than my 180k estate!

I am under the impression this transmission is one made by MB, not ZF?

But, as I said, MB now issue ATF change schedules for automatic transmissions.

See here for the correct procedure:https://www.mbclub.co.uk/forums/howto/115863-how-change-automatic-gerbox-oil-flush-722-6-box.html

 

[gusmagoo]

Ah!... very good!

 

[wu56Shoozz]

Sounds more like a speed sensor that a box fault.. it would give the same symptom