Atf Level, Checking - BMW 5251 Service Manual

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I
Automatic Transmission
Automatic transmission fluid (ATF)
The E39 automatic transmission is filled with either Dexron Ill
ATF or Texaco 80728, a life time oil.
CA UTIOI\C
Use only the transmission fluid that is approved for use by
BMW All other fluids will cause non warrantable transmis-
I
sion damage.
Mixing different types of transmission fluids will lead to
transmission failure.
NOTE-
The type of transmission lubricant used can be found on a
stickeron the transmission pan. Dexron 111ATF (blacksticker)
reads "ATF-Oil': Special life time oil (green sticker) reads
'Life-Time Oil' : If in doubt, consult an authorized BMW dealer
for alternate fluid use and current information regarding
transmission operating fluids.
ATF level, checking
Check ATF level if there is evidence of a leak, a complaint re-
lated to fluid level or afler transmission repairs.
The automatic transmission is not equipped with a dipstick.
Checking the ATF level requires that the transmission be at
operating temperature during the checking procedure.
NOTE-
Vehicle must be level throughout tests
-
Drive vehicle to warm up ATF to operating temperature.
-
Connect BMW diagnostic scan tool DiSplus, MoDiC, GTI or
equivalent to determine transmission oil temperature.
ATF
level checking
Fluid temperature
3 0 '
-
50°C (85' - 120" F)
-
With engine running, switch on air conditioning to increase
engine idle speed.
-
Apply parking brake.
-
While applying foot brake firmly move gear shift selector
lever through all gear positions, pausing in each gear briefly.