I have an M103 motor in my 190E.
The red cap for the ATF dipstick seems to have some sort of lock or something???

Can someone please tell me (the idiot) how to get the cap off please???

Thank you,
Mike McKinney

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1989 300CE - 269,000 km
1994 SL600 - 59,000 km

The lock is hinged from the top.
Pull out from the side and up on the latch, then pull straight up on dip stick.
You will understand after you see it out.
Kinda like those beach umbrella shaft lengthen locks.

In the book, if u have one.

Don't feel bad...I looked in the manual and STILL couldn't figure it out.

So I played with the black plastic thingy around the dipstick until I found that it unclipped from the top and hinged at the bottom, thus, unlocking the dipstick.

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2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car

Be careful to avoid getting dust or other contaminants onto the dipstick when you replace it. The transmission is very sensitive to this type of contamination, hence the lock. A lot of folks wipe the stick off with their fingers to avoid any problem.

thanks boys!!!

Mike McKinney

__________________
1989 300CE - 269,000 km
1994 SL600 - 59,000 km