Took X in for diagnostic, then limp mode

[plasstik]

Most, if not close to all, daily drive our trucks. Same here.
Took my X on the shop to have them diagnose fifth gear shudder about 35-40 miles an hour. Nothing before those speeds, nothing after, and nothing at high speeds. No shudder in any other gear. Just fifth.

I’ve mashed the gas, drove it like I stole it, sat in traffic, sit in it to stay warm, drive for hours (getting 21-22 miles the gallon), fresh fluid, filter, valve body rubber tubs and the square rubber gasket (trans brake gasket?), No codes, no issues. Just fifth gear shudder. 137k on the dash.

I give specific instructions, allow/bring vehicle up to operating temperature, drive. The shudder will present at 35 miles an hour.

They didn’t call me, I had to call them an ask, what did the diagnostic say.

Told me it went into trans fail mode.


Because I don’t no everything there is to know about the X.

What is the likelihood the tech drove it hard, causing the transmission to slam into gear?

They did tell me it was a half quart low in fluid, but I never had any problems and even had the gears slam/ shift hard and no limp mode not trans fail mode.

Did the stars just align?




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[plasstik]

Anyone have something like this happen?


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[X5chemist]

Low fluid level will affect torque converter lock up. I think the X5 can lock the converter in lower gears too. It's a GM transmission. The scanner should report codes. PLus they can connect gauges to test pressure. Does the shop specialize in transmissions?

[plasstik]

Can’t say for sure, but they service mini, bmw, Porsche Mercedes’, so I have to assume they they what they’re doing🤷*♂️


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