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Mark
Mark, Technician
Category: Car
Satisfied Customers: 1504
Experience:  Qualified City & Guilds
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Hi, I have changed the filter and transmission fluid on my

Customer Question

Hi,
I have changed the filter and transmission fluid on my Mercedes A160 (2001 51 plate). After searching a bit as Mercedes services did not wanted to release the information I have found that it should take around 3L of oil f replacing the fluid and filter only. Then I have purchased the dipstick to check but it seems that there is fare too much oil in the sump as readings above the scale.
Does anybody know how much oil I should put in if replacing the filter as well ???
Submitted: 2 years ago.
Category: Car
Expert:  Mark replied 2 years ago.

Mark :

Hello, my name is Mark and I will try help you with this.

Mark :

Have you checked the oil level at the correct temperature.

Mark :

It should take about 3.3 litres when you drain and fit a new filter.

Mark :

You will need the use of a suitable scan tool to check the level properly.

Mark :

Hi

JACUSTOMER-lowqze0x- :

I have used genuine mercedes dipstick to check but still out of the range (above the scale).Car was parked on leveled surface. Everything is related to F fault as alredy changed the automatic gearbox gear selector module bit still nothing.

Mark :

A160

Mark :

Did you run all the gears through with the engine running?

JACUSTOMER-lowqze0x- :

And i have added the oil through the dipstick hole.

Mark :

Click on the link above.

JACUSTOMER-lowqze0x- :

Yes and R and D gears seems to bang in to place whhen changed

Mark :

Do you have a scan tool

Mark :

Did you read the link I sent?

JACUSTOMER-lowqze0x- :

Yes carsoft 7.4 and P123F is constantly showing under EGS section but I can not find the translation of what it means

Mark :

Are you able to measure the transmission oil temperature

Mark :

Did you read the link I sent.

JACUSTOMER-lowqze0x- :

I done it on both cold and above 80C

Mark :

Check the connections at the shift selector board for fault P123F

Mark :

If you have too much oil in the gearbox, then you need to remove some.

JACUSTOMER-lowqze0x- :

Already did and pcb from selector reconditioned by ecu testing.com but still after 10min. Drive F appears on dash but usually disappear next morning.

Mark :

Check the wiring plug connections for oxidisation.

JACUSTOMER-lowqze0x- :

Checked. Still nothing. :(

Mark :

What about checking the wiring for damage, chaffes or breaks.

JACUSTOMER-lowqze0x- :

all wires are fine

Mark :

I think you should start again.

Mark :

Drain the gearbox oil and only put enough in according to the dip stick. If that means only using 2 litres then that is all you should put in.

Mark :

Then raise the gearbox to operating temperature and recheck the oil level. If it requires a bit more then add it but only to the max line on the dipstick.

Mark :

If the fault code still doesn't clear and you are 100% certain there is no fault with the wiring or the position sensor as you have stated then either the gearbox is faulty or the control unit is faulty.

Mark :

At this point you will need specialist gauges to check the oil pressures in the gearbox under certain test conditions.

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