Recent content by McMetric

The LR battery charges faster when empty. But the consumption is lower on the RWD. US and China Models use the CATL LFP in the SR The German made Y SR (sold here in the EU) has a BYD LFP battery which is a bit better. 176kW peak, longer and higher charge curve than the CATL. Plug it in at any...

My last M3 charged fine with 7.4kW 1 phase here in Germany. I used the Tesla CEE32 blue adapter plug for the Tesla UMC Some external chargers just do not allow more than 16A 1 phase, the cars onboard charger is not the problem.

Lets look a bit to the left and right, not only on Tesla. Porsche writes in its new 2019 Taycan brochure that frequent fast DC charging will cause longer charging times longterm. They suggest DC max 50kW, or better slow AC. A nice way saying that their current 2019 cells will also suffer. Lower...

Many S85 owners now complain about the battery loss due to the latest software. What is needed for a downgrade (or how to fool the bootloader ?) I have an old spare MCU board with a software from pre 2017. Can I put a new emmc with ie a 2018.50.6, /var from the car which needs the downgrade and...

Go for it ! Exchange of a complete MCU here in Germany is >3000€ plus work, so far over $3600 I had a small glitch in my emmc swap. fsck deleted the files in /var/etc, all keys. Did not check if after fsck ran. Car was running, all fine, except there was no connection to the Tesla server. Put...

OK, MCU ist working again. Long story short (see my previous posts) MCU was fine but I decided to change the emmc before it dies. Desoldered the emmc in a Mac/phone shop. Copied all data from it and found 3 of the 4 partitions having bad superblocks and errors. P4 /home unfixable with fsck...

Other situation: What is needed to use an MCU board from another Tesla to work in your own ? (given that you can modify the emmc) Key files Car equipment country/region settings like apn What else ? (also given that the OS is not too far out)

Thank you. Found more errors. P1 (main) has errors, got a fresh one. var is repaired and someone showed me a script to rebuild home. Did not know that home will be rebuild on reboot if needed First time doing this is of course always harder and I need to brush up linux skills to level 1000

Copied the emmc with ddrescue, no hardware errors. So it seems just a software problem and the fs is corrupted. At least some progress. Will try again tomorrow with some help from someone.

Old chip was working (car was driving with no issues, 2018.50.6). dd if=/dev/sdb full image, not separate partitions. New chip is a Swissbit 16gig. Tried a 64gig Swissbit before with an image from another emmc Setup here worked before. EDIT fsck from util-linux 2.29.2 /dev/sdb4 has been...

This time I have errors. First emmc from a salvage unit was fine, all 4 partitions without errors. Now I have the emmc from my (working) car here. Made a copy with dd, so far so good. Wrote that onto a new emmc and fsck shows errors in 3 var and 4 home. var can be repaired, but fsck always...

First time I used another SD card reader, did not work, emmc was not recognized -> Transcend USB 3 SD reader works (7.50€) Voltage must be set to 1.8V on the Allsocket, not 3.3V to read the Hynix Tesla emmc

The desoldered chip here was only cleaned, not reballed. It shows up under Linux as sdb1 2 3 and 4 Using an Allsocket SD adapter and a transcend usb3 SD reader Allsocket set to 1.8V Did you try a new emmc in your setup to format and read that to see if the setup is fine ? Replacing my working...

Had one emmc unsoldered from a spare MCU. Reads fine, all 4 partitions. No fsck errors. Wrote it on 64gig new Swissbit. Expanded fs. All looks good. I could have the new chip soldered back on that spare board, but I cannot test if it works. Cant power up an MCU just by 12V with no ext. cables...

We did a tour of 3 mountain passes in the Swiss Alps last year, S85. The really twisty stuff. Tesla and Abetterrouteplanner helped. They said 54% at the first mountain pass top for only 1/3 of the full distance, so I was more than sceptic if we can make it back. 2 passes further, still 51% and...