Displays on older model of Tesla electric vehicles are bricking because of shoddy flash memory , according to report inInside EVsandMotherboard .
The specific trouble is with an onboard NAND - based flash entrepot crisp , the eMMC , which is implant in some models of Tesla ’s Media Control Unit ( primarily MCUv1 , though MCUv2 may be involve to a less stage ) . Experts tell both sites that Tesla ’s cars are writing so many logs to the cow dung that the car are wearing out the flash chip — an issuethat is technically inevitable , but is hap a lot sooner than it should . The chip ’s failure screws with role on the Tesla ’s touchscreen , whichusers onforumswrote could make driving the railroad car inconvenient or even slenderly dangerous ( issues claimed include loss of the power to defrost windows or charge the car ) .
057 Technology ’s Jason Hughes tell Inside EVs that when the 8 gibibyte flash card was not an consequence , but over the years “ Tesla ’s microcode effigy size has work from about 300 MB to the full 1 GB maximal size of it . ” Hughes tote up that while the cow dung is designed to minimize prospicient - term degradation via a proficiency bid wear tearing down , in which it spread wear across “ idle sections of the flash retentivity to widen the efficient number of write cycles available , ” the onboard computer also creates “ excessive ” log . Along with other data caching , this results in “ no free space depart for additional vesture level to compensate for the excessive log writing , ” Hughes told the site .
The dashboard of a Tesla Model S, photo taken in 2015.Photo: Tony Gutierrez (AP)
“ I see it in the wild , ” YouTuber Rich Benoit , who fix Teslas , tell apart Motherboard . “ I own a shop class that doctor these cars and the older vehicle are starting to show their signs of age . ”
compound the issuing : the flash chip is solder to the MCU , meaning it ca n’t just be swapped out . Motherboard report that because Tesla did not sign a2014 memorandum of understandingbetween automakers who agreed to sell parts to third party repair shops , it ’s difficult to ascertain Tesla mending shops and spare parts loosely have to be salvaged from wreck .
According to Inside EVs , Hughes said the replacement MCU be $ 1,800 ( or much more in certain markets ) . That is a cost that would have to be paid by the consumer if the Tesla in question is out of warrant . Hughes and Cotran Consulting ’s Robert Cotran told the situation that they can instead replace the screwed flash bulb chip with a enceinte capacity , as well as use playscript to tell the computer to write the log to drive instead . The latter option comes at the price of a tenuous performance penalisation .
While technician are presently see the upshot pop up on MCUv1 , the excessive logging issue could finally fire out ostentation chips on MCUv2 or even Model 3 . Tesla CEO Elon Musk reply to Hughes on Twitter that the subject “ should be much better at this degree ” without elaborating .
Should be much undecomposed at this point
— Elon Musk ( @elonmusk)October 12 , 2019
“ Tesla call for to just disable syslog on all vehicle unless specifically required on a ontogenesis car or to diagnose an infotainment issue on a specific car , ” Hughes narrate InsideEV . “ There are absolutely zero reasons to lumber hundreds of megabyte per day to a small build - in flashing chip . ”
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