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mike switzer
mike switzer,
Category: Transmissions
Satisfied Customers: 611
Experience:  lead diagnostic tech at Aamco
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My transmission show me that code 4F92 EGS: Ratio

Customer Question

My transmission show me that code 4F92 EGS: Ratio monitoring, clutch A-C
JA: Has the clutch been slipping? Are you having any trouble shifting?
Customer: yes when i give gas, the transmission sleep some times
JA: What is the model/year of your BMW?
Customer: 525 i 2005
JA: Are you fixing your 525 yourself? What have you tried so far?
Customer: No, another mechanic show me information
JA: Anything else you want the mechanic to know before I connect you?
Customer: 4F8D EGS: Ratio monitoring, gearshift 5-4 History
4F92 EGS: Ratio monitoring, clutch A-C Current
Submitted: 8 months ago.
Category: Transmissions
Expert:  mike switzer replied 8 months ago.

how many miles do you have on your bmw

Customer: replied 8 months ago.
125,000 miles
Vin number WBANA53545B855851
Expert:  mike switzer replied 8 months ago.

do you know the last time the transmission may have been serviced. i know bmw calls for no service of the fluid but it is always a good idea to change it.

Customer: replied 8 months ago.
I have changed this two months ago
Expert:  mike switzer replied 8 months ago.

bmw valve bodies are well known for going bad... well the check balls are what go bad they are made out of plastic and wear out. they do this so as not to wear out the valvew body. i would recommend having either a the entire valve body replaced or the check balls replaced. the later should only be done by a shop very familiar with transmissions.

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