I have 2011 XKR with 67000 miles and decided to do ediff and transmision flush and pan filter replace at my indy shop.
Picked up my car and noticed that 2 and 3 gear shifts are jerky, also under hard acceleration from a stop transmission goes crazy like it doesn't know what gear it should be. When coming to dead stop from a hard acceleration i noticed a dip in RPMs then RPMs recover to normal idle but one time car completely died at dead stop ( had to restart and it was fine). Took my car back to the same shop, they took it to a guy with SDD that updated transmission software . picked car up and same thing keep happening. Hard shifts. Dips in rpms when coming to complete stop. Weird shifting points. All those issues are happening between 0-80mpg speeds. It drives just fine on highway… i did 250 miles since i picked the car second time from the shop and the issue didnt resolve by itself
Anyone had similar issues? I dont know what to do next ,and im afraid to drive the car …

 

I wonder what fluid they used and also whether they filled it correctly.

Any fault codes?

 

no codes in beginning but got one yesterday when transmission refused to shift during a hard acceleration forced me to restart the car code was P0732-07 Gear 2 Incorrect ratio .
i will find out what fluid they used.

i read that there were two types of fluid and there was a big debate which one should be used

 

Generically the following are all possible however since you only had the fluid changed it is more than likely number 1 hopefully and should be easily corrected.
I suggest you ask what procedure they used to refill the trans.

1. Refill of Low transmission fluid level.
2. Dirty transmission fluid to be changed.
3. Faulty Shift Solenoids Replacement.
4. Repair or replace Shift Solenoids harness which is open or shorted.
5. Faulty Shift Solenoids circuit, electrical connection repair/replace.

 

Thanks! what transmission fluid is recommended?

 

That is scary. I have the same car and had the fluid changed at 76,000 mi. No problems so far. Good luck. I hope you find the problem.

 

You cannot go wrong with the appropriate Lifeguard ZF product in my opinion.

There is probably a Mercon SP equivalent for your ZF however I am not sure on that. Its a few bucks cheaper a quart than the ZF fluid.

Its not as if you are going to change the fluid every year.

 

Given that this problem appeared immediately after your shop did a fluid change, logic tells us that either they used the wrong fluid or did not follow the quite complicated drain and fill procedure specified by ZF - and this can result in an incorrect fluid level. The TCM should not be affected by a drain and fill procedure done properly.
Is your shop one familiar with the ZF units?
For the record, I have had fluid changes done (the filter is integral with the pan) on two different 4.2 cars using the Jaguar-branded ZF fluid at a proper transmission shop. No issues at all....Something went wrong in the procedure your shop used or they used the wrong fluid.

 

Not only the CORRECT fluid, but the LEVEL is critical.
Your symptoms sound more like improper fluid level to me.

 

Might want to try a hard reset first, if not done already. Disconnect the battery cables, briefly hold them together, then reattach to the battery.
Maybe things got confused, so let it relearn your driving style.

 

I read that hard reset , resets ECU but it doesn't reset TCM ( transmission computer) tcm has to be reset via SDD. But i will try that.

 

You're correct. A hard reset will not impact the TCM but won't hurt anything either. If it's my car, I'm taking back to the transmission shop, asking them what fluid they used and telling them to complete the job. I'm with Ceejay and Jackra. Symptom of low level fluid

 

They screwed up! I changed my transmission and ediff myself. My 2014 XKR only has 14K miles. The refill process is a bit of a PITA. I used only Jaguar branded fluids I purchased from the dealer; although, I believe ZF Fluid 6 is the same. I cycled 18 litres of trans fluid through the transmission at $50CAD/litre. I wanted to purge as much old fluid as possible from the torque converter and transmission. I also measured fluid out/in and did a proper fill level check. When I was finished the fluid was a very light honey color and almost looked like new. There is no way to do a complete 100% flush--the new fluid going in is always mixing with the fluid in the system to some degree. Your Indy shop either used the wrong fluid and it mixed with the old fluid (this will be difficult to purge); or, they never filled it properly and you are driving on a fluid starved transmission. I would be pissed.

 

So there is no way to check fluid level? thru OBD scanner? or even with low fluid level , would i get any warning on the dash?

 

No. @Peter Ucinski , everyone’s info above is paramount. Deal with the fluid type and appropriate level at appropriate temperature now or risk a major rebuild.

 

The ONLY way to measure fluid level is with the car level, or transmission level, and with the fluid between 40 and 50 degrees C where the fluid will steadily trickle out of the fill port on the transmission.

No warning on the dash and no OBDll reading.

 

I just called jaguar dealer if they do transmission flush and they said that they dont usually do it as the fluid is lifetime and it would be very expensive to flush it and replace pan and filter.... interesting....

 

The "lifetime" bit has been thoroughly debunked.

The manufacturer of the ZF transmission even says change the fluid by 80K or earlier under heavy use.

 

But note that it clears the OBD monitors so the car will no longer pass smog checks in various places until they set again (which hopefully they will - if not, big pain may follow).

 

find another dealer.
specify a fluid ‘change’, not flush.

sorry, I forgot... you may not know what’s in there. I suppose ‘flush’ it is.