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Discussion Starter #1
Can anyone provide recommendations for repair/rebuild for the EGS (electronic control module) for a ZF GA6HP19Z?

The vehicle will not shift out of park. Multiple codes are present that will not reset. Previously went into limp home mode. Transmission service did not cure the problems.

Thanks in advance.

Eddie in Seattle


2008 X5 3.0si
1988 M5
1987 528e
1979 528i
 

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mechatronics seal is blown out, and probably some solenoids. You can repair these, fairly easy to do yourself, and cheap, costly if someone else does it.
 

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What do you mean by transmission service?

Try thectsc.com for parts, may have rebuilt valve bodies.ARE YOU 100% sure it is the egs module?

Do you have the code reader? So you are doing the troubleshooting?
 

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If the issue started after service, check for bent pins in the round connector. You need to use a small mirror to see in there.
 

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Discussion Starter #6
Thank you for the replies.

I recently purchased the 2008 X5 3.0si with 85,000 miles. Seller stated the transmission goes into limp home mode after long drives. On the 20 mile drive home, it went into limp home mode. Transmission works well otherwise.

I serviced the transmission with new ZF pan/filter, bridge seals, adapter seal, sealing sleeve, and Valvoline Maxlife Multi-Vehicle Transmission Fluid (BMW LT71141, LA2634, M-1375.4, ATF 3.0, 7045E, ETL 8072B).

Filled transmission, started, brought up to temp, added additional fluid, shifted through all gears. Fluid level was checked with vehicle level NOT transmission level. There is a difference. SHOULD THE TRANSMISSION BE LEVEL INSTEAD?

On short test drives ***8211; worked great. Long test drive ***8211; 1) Limp home mode after 15 miles ***8211; shut down and restated, 2) Limp home mode after 5 miles ***8211; shut down restart ***8211; will not stay in drive or reverse. Flat Bed ride home ***61516;

I got busy with work. It has sat in for a couple of months. I periodically start the car. It still will not stay in drive or park.

Error Codes:
507B EGS Parking-gear sensors implausible
507D EGS Parking gear incorrectly disengaged
CF2F EGS Message (LNI) from GWS

Information Display: Trans malfunction. Transmission position may not be possible. Set parking brake ***8230;.

I will get more diagnostic information from the ASAP.

I will check the electrical connector and fluid level today!
 

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Given that it had a bad transmission when you purchased it, I am going to opine that the issue is NOT anything YOU did. So not fluid level, not bent pins.

Of course if someone else was in there earlier, all bets are off.

https://www.bimmerforums.com/forum/showthread.php?2362761-EGS-signal-line-disturbed-trans-in-fail-safe-mode

http://www.e38.org/electran1.pdf

https://www.bimmerfest.com/forums/showthread.php?t=870719

and https://www.bimmerfest.com/forums/showthread.php?t=990922 (like the guy that complains about dead threads and is gone for 2 months....)


GL


(Oh, you DO know that fluid is NOT "BMW approved fro a ZF6" correct? Should be fine, and why dump $20 bottles of lifeguard into a dead tranny. Just saying....)
 

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If it worked as you described in later posts, pins are not bent. Check fluid level with engine running, vehicle level and fluid between 30 and 50 degrees C. I bought an E90 (w/ ZF 6HP19) with a "bad transmission" that was just low on fluid. The PO did not check the level with the engine running.
 

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Let***8217;s not take OP off track w a quibble about the fluid (yeah, I did start it). It isn***8217;t a ***8216;wrong fluid***8217; issue, for sure.
 

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Discussion Starter #12
Thanks everyone.

Update:
Checked the electrical connection (lock ring was correct and wiggled the plug) restarted with no change in error codes.
Started and warmed up to 40c (took a long time).
Removed the fill plug - lots of fluid gushed out - not just a trickle.
Drained and removed the pan. About 5 quarts were retrieved.
Black sludge on the magnets. A couple of pin head size metallic bits in the pan. (has less than 100 miles since service)
Park lever was correctly positioned
All the rubber seals were in place and undamaged

While warming up, the display on the Foxpro scanner displayed Torque Convertor turbine speed as blank.

Did the oil pump go bad? Transmission replacement/rebuild? How much $$$?

I have probably done at least 10 transmission R&R jobs over the years (too many for just a hobby guy). I still need to replace the transmission in the 1979 528i. I think I have bad transmission karma and too many vehicles ?!?!

The X5 is in very, very nice condition otherwise (9/10) with 83,000 miles. Paid $6,000 earlier this year for my daughter.

Thanks again! Eddie
 

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Here is a low cost (under $200 if you pull it) option for you https://row52.com/Vehicle/Index/5UXFE43597L012584

It has 136k miles but carfax shows it was serviced at the dealer. Swap your EGS module from the old trans to the new one.

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I

The X5 is in very, very nice condition otherwise (9/10) with 83,000 miles. Paid $6,000 earlier this year for my daughter.
You overpaid a bit.

Good news it that (clearly) you can wrench.

A cheap used is probably the best play.

Id only want a rebuilt if I did it, or knew the shop that did it, or a BMW remanned.

As smassey points out, the EGS is matched to the DME, so you want to use your old one
 

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Discussion Starter #15
Sammy and ard,

Sammy, thanks for the lead. I'm calling Pick-n-Pull Lynnwood today.

Sammy and ard, thanks for the tip on the EGS/DME matching. I hope the EGS is OK. It shifted very well initially ... other than the Limp Home Mode when warm.

I will call a friend at BMW Seattle and try to get a detailed service history on both vehicles.

Eddie
 

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Sammy and ard,

Sammy, thanks for the lead. I'm calling Pick-n-Pull Lynnwood today.

Sammy and ard, thanks for the tip on the EGS/DME matching. I hope the EGS is OK. It shifted very well initially ... other than the Limp Home Mode when warm.

I will call a friend at BMW Seattle and try to get a detailed service history on both vehicles.

Eddie
Good luck with it. Calling the junkyard may not get you much info. Mine won't even walk out to see if the transmission is still in the car. These are pretty low budget operations.
 

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Discussion Starter #17
FAIL. Big hole in the trans oil pan in the X5 in the Pick-n-Pull yard. Appears the reason the car was totaled was that it was high-centered tearing a piece out of the trans oil pan. Aluminum skid plates had been removed. None of the body panels had any major damage.

Time to search for another transmission!

Could the EGS faults be due to bad solenoids?

Thanks,

Eddie
 

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FAIL. Big hole in the trans oil pan in the X5 in the Pick-n-Pull yard. Appears the reason the car was totaled was that it was high-centered tearing a piece out of the trans oil pan. Aluminum skid plates had been removed. None of the body panels had any major damage.

Time to search for another transmission!

Could the EGS faults be due to bad solenoids?

Thanks,

Eddie
Sorry I sent you on a wild goose chase. I feel bad now. Solenoids are never a bad idea to change. But since you have metal in your pan, I don't think they will solve your issue.
 

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Do you actually know whats wrong with your transmission?

Before throwing parts or whole new transmissions at it, might be worth seeing if your existing one can fixed. Pull it out and have a competent tranny builder look at it and determine what went wrong. Chances are it was hardware failure (solenoids/pump/clutches/bearings/etc) - all repairable.

Replacing the tranny is a pain in the neck with it locked to the ECU/VIN, and there is no guarantee a secondhand tranny wont have the same or more issues in hardware.

Here's an example of pulling it down for repair: https://www.youtube.com/watch?v=F8y7KqZZoEg
 
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