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  #28  
Old 1 Week Ago
johnnycucumber  johnnycucumber is offline
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I am also having problems with our 2014 Grand Cherokee. It was running beautifullybefore the S49 Update. We now have the fan roaring at extremely high revs for no apparent reason, fuel usag has gone from low 8.7lt/100km to 9.8lt/100km and several times the gear shift wouldn't disengage from park to reverse. Does anyone know if the troublesome update can be uninstalled by resetting the computer?
JC
  #29  
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Troutman  Troutman is offline
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No mate, resetting won't do anything. The previous parameters before the shitty update need to be uploaded into the ECU. This is like the BIOS/operating system on a computer if you like and is stored on ROM chips. You would think the stealerships would have offered to do this once it was clear this update was a load of shit.....but no, they chose to instead damage perfectly good cars.
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  #30  
Old 1 Week Ago
oldgringo  oldgringo is offline
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My MY15 Overlander had the S91 patch loaded yesterday.

Perhaps it was the 40 degree day - still had the roaring fans and a few additional electrical foibles.

Have not checked fuel usage however, expect it to remain higher than previous.

Digital radio remains stuffed with no fix or replacement in sight.
Wondering if all these foibles are likely to affect the Quadra0drive operation.

Dealership tells me the transmission update was a safety issue and the install is mandatory.

Like the S43 update in the WH, how to stuff up a perfectly functioning vehicle in one foul swoop.

Not happy.
  #31  
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Yep. not going near a jeep dealership ever again.... mine is working fine, don't want it stuffed up thankyou.
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  #32  
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Had my patch done on the patch this morning. You reckon they would have got it right the first time. Only driven it from the stealers to home, so didn't notice any difference.
My economy didn't alter on the first patch.

Will post again if something unusual happens.

Cheers, Craig
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  #33  
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Cruise Control  Cruise Control is offline
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G'Day Old Gringo

Had my WK2 diesel serviced before Xmas. Told them not to do the S49 update. They said its a mandatory update. I told them that under no circumstances were they to do it and if they could not guarantee that then I would not proceed with the service.

They chose not to do it, electing to defer installing a known defective update until the issue was resolved.

cheers
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  #34  
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chocco  chocco is online now
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Quote:
Originally Posted by Cherokee30D View Post
Had my patch done on the patch this morning. You reckon they would have got it right the first time. Only driven it from the stealers to home, so didn't notice any difference.

My economy didn't alter on the first patch.



Will post again if something unusual happens.



Cheers, Craig


Mines booked in next Thursday let us know if you notice any changes for the better I have to sign a waiver if I don't want it.

Just hoping they fix the fans enough to help cool the engine when oil and water temps start to creep instead of that crappy low % spin.


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  #35  
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Troutman  Troutman is offline
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Quote:
Originally Posted by chocco View Post
Just hoping they fix the fans enough to help cool the engine when oil and water temps start to creep instead of that crappy low % spin.


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I haven't heard of any overheating issues on the WK2.....what's the story?
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  #36  
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chocco  chocco is online now
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When towing I would like the oil sitting around 100deg not the 120deg on a hot day. Everyone has their own opinion on oil temps and I believe one of the reasons fca went to a 5w40. I already use a 5w40 in summer anyway. I am planning on keeping this car to hopefully 150k and may even get a oil cooler from the US


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