Tesla Service Netherlands gave me the tip for my sluggish MCU1 from my Nov. 2017 Model S. “Manually delete all your recent navigation trips”.

It took me about 20 minutes swiping right (tip #2) to delete it all. Result? My MCU1 is much faster. Or less sluggish I should say. The difference is very much noticeable.

So give it a try whenever you have a moment (supercharging meditation) and the result is there. Happy deleting!

Ps: now explain the girlfriend why you keep deleting your history.

Tag: -

47 comments.

  1. KeesPro

    Ps: there seems no way deleting all history at once, other then performing a factory reset...

    1. allhands

      I realized you can swipe right to delete a place in your history. No need to press and hold and delete.

  2. MrValue

    This worked for me as well, definitely a noticeable improvement. Totally worth the 10 minutes spent swiping.

    1. DVio

      They should add an option to select and delete.

      1. [deleted]

        Or just fix it so save addresses don't slow down the MCU. There's no reason for that.

  3. CHAiN76

    Tesla should add a "automatically delete data older than x days" option for mcu1.

    1. PowerfulRelax

      I’m actually really surprised that this hasn’t already been implemented.

    2. baselganglia

      Ooo perfect. Doesn't need to be specific to MCU1.

  4. fetzu

    I laughed it off when the SC suggested it as a fix for my audio stutters, but I just did it and it works. On the one hand that's pretty cool to have a more-than-half-working MCU, on the other hand it is scary to see how badly the memory management of the MCU has been coded..

    1. SyntheticRubber

      There is hope they are adressing it after Elon acknowledged it on Twitter now

      1. fetzu

        Yeah, let's hope they hire more developers for optimisation and less developers for games, because my $350 Switch does the latter pretty well whereas my MCU cannot even load the release notes..

        Edit: added a word

        1. Quitthatgrit

          This last update took over an hour for me to finally see the release notes... And I have cleared my nav history too.

          I really wish Elon would stop downplaying this issue with MCU1 cars and let us choose if we want to pay for the upgrade or not. It sucks being an earlier adopter before Model 3's were released. We helped boost the model 3 program but get left in the dust time and time again, even though I paid double the price.

          1. Nitrowolf

            This is the reason I haven't bought a new model X. Tired of half functioning equipment and features promised but never delivered.

          2. Roses_and_cognac

            Remember when AP1 was going to get smart summon and onramp to offramp nav on autopilot? How long do you think they will wait to deliver ?

          3. Nitrowolf

            Any day now, I'm sure... That's exactly what I was referring to as well, lol. Smart summon and Onramp/offramp AP.

          4. yrrkoon

            I always find it unfortunate that they didn't design the MCU to make it more easily upgradable given how fast compute improves. Would've sure been nice if the compute module was an easily DIY swappable component separate from the screen/housing.

          5. colddata

            compute module was an easily DIY swappable component separate from the screen/housing

            With storage on a proper swapable upgradable SSD.

          6. Tree300

            There is no MCU upgrade coming unfortunately. Elon’s tweets notwithstanding, the ideal upgrade path is buying a new Tesla.

        2. zvekl

          Yeah no kidding. Release notes don’t load unless I close them after an update reopen them and wait about 10 minutes

        3. Tree300

          Based on past history, the buzz from shipping new entertainment features outweighs their desire to fix long standing issues.

        4. Delirium101

          Exactly! What the hell is up with the release notes or manual never loading!

      2. [deleted]

        The problem has existed for 7-years. Ouch.

        1. SyntheticRubber

          Like the extensive logging thats burning out the emmc chips

          1. SippieCup

            this was actually fixed in .36

            Now its just map data caching and stuff like spotify which writes to the the /var partition, but syslog is pretty empty.

          2. AllWashedOut

            SippieCup is legit. Some of his code runs in my car.

          3. SippieCup

            Happy cake day! Some of your code runs in my car too (and like.. is way better)

      3. Roses_and_cognac

        It's not a new problem. This was a fix years ago and still us, I'll believe they really fix mcu1 after it's fixed

    2. ninedollars

      Funny, same with me. Audio stuffer and delays. Even the warning sounds from doors...

  5. TeslaBargain

    Another tip is to regularly reset all trip counters as they store more data than just the millage. I reset the first one daily (as I use it for my logbook) and the second one monthly (noting the total millage, consumption and average in my logbook).

  6. jeffoag

    I hope this issue has been reported to Tesla engineers, and it will be addressed by OTA update soon.

    1. ninedollars

      It's not. Been like this since 2015, the year I got my first Tesla. This is still the same in my 2017 x.

  7. g0atbutt

    I just did this with my Model X (MCU1), and it’s a night and day difference. Basic animations (like the up arrow drawer slide up), no longer drop frames. Thanks for the tip!

  8. sendmeur3dprinter

    Sweetie, I swear I went straight home from work.

  9. zo0galo0ger

    u/dmc_ryan protip twofer for us old owners :)

    1. DMC_Ryan

      Nice! Thanks for the heads up.

  10. sleepy-brain

    Does this also apply to model X? How about model 3?

    1. Tesnatic

      Model X have same mcu, but it depends on production date to say if you have mcu1 or mcu2. M3 has different hardware and code so possible but unlikely

    2. curly7733

      I had Mobile Service done this past week and they recommended I do it on my Model 3 as well. The MCU is more powerful but it will also slow down if there is too much in the history. The technician told me he deleted over 2500 entries from another customer who was a real estate agent. Her navigation was lagging about 10-15 seconds behind real time. After deleting the entries, everything went back to normal.

      1. davere

        This is nuts. If a simple change that limits the maximum number of entries stored would fix this, Tesla absolutely should and limit the number of entries to something that doesn't noticeably affect performance.

        Even better - fix the performance issue. There should be no problem storing thousands of addresses.

  11. newtonfb

    Wouldn't a factory reset just be easier? All your Slacker, Spotify, and Podcast should sync up when you reenter your credentials again.

  12. Artisntmything

    What's an MCU1?

    1. Tesnatic

      It's referring to the older touchscreen for cars built pre-march 2018 which you might know as the Tegra mcu

    2. [deleted]

      Media control unit

      1. felickz2

        Anyone tracking hardware revisions on MCU1 components?

  13. viper2ko

    Sad that this is the software optimisation elon talks about

    1. elmexiken

      Yes, this is it. How'd you know?? Please, tell us, oh wise one??

  14. RobertRolnik

    If this is true, then Tesla has no business being in an enterprise that develops software. If it is false, then it shows that they cannot be trusted.

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