Hi, It's happened again. Yesterday while driving the Leaf lost drive mode, forcing pulling over. I couldn't reengage gear until I had disconnected the 12v battery. Looking at the evidence today, the incident can't be explained by writing random bytes in CommandWakeup(), nor by having the wrong timing. It actually suggests that OVMS locked up ten minutes before the car was impacted. Here's what happened. 13:15 to 13:17 I drove off from home, but forgot an item so quickly returned back there. The sd log records this activity just fine, and the last entries before the suspected hang were these: 2025-02-07 13:19:59.174 GMT D (93751944) events: Signal(vehicle.asleep) 2025-02-07 13:22:29.184 GMT I (93901954) housekeeping: 2025-02-07 13:22:28 GMT (RAM: 8b=79028-81980 32b=12560 SPI=3262992-3285432) There should have been the next housekeeping message at 13:27:29 but none was recorded on the sd. Log flushes are configured to occur after 30 seconds. The last MQTT metric update my server received was around 13:27:50. This showed it was connected to home wifi. At 13:28 I unlocked the car, started it and drove off without noticing anything unusual. None of this activity appears in the log. During the drive there should have been a connection via Hologram to my server, but none was received. Ten minutes later at 13:38 I was driving when a yellow warning light came on and the car moved to neutral. Essentially the same symptoms as in January: turning off and on would not clear the fault; it couldn't detect brake status meaning it told me to press brake pedal when I already was. Also showed I-key system error. As I was stranded I used the only option I knew of to clear the fault, and I disconnected the 12v battery. On restoring power and dismissing the fault notice, it was happy to drive. The log shows this cold start SNTP was at 13:44. On returning home, unfortunately 'boot status' says nothing about a crash, presumably because any information was lost when I pulled power. So it seems there is some mechanism by which OVMS can lock up, without watchdog oversight. And that ten minutes later it can do something that becomes a critical issue for the car systems. Chris Relevant log entries below, all part of the same file. 1970 follows immediately after 13:22:29.184. 2025-02-07 13:17:50.184 GMT D (93622984) vehicle-poll: Pollers: Queue SetState() 2025-02-07 13:17:50.184 GMT D (93622984) vehicle-poll: Pollers: PollState(0) 2025-02-07 13:17:50.184 GMT D (93622984) events: Signal(vehicle.off) 2025-02-07 13:17:51.144 GMT D (93623944) events: Signal(vehicle.aux.12v.charging.dip) 2025-02-07 13:17:53.144 GMT D (93625944) events: Signal(vehicle.aux.12v.dip) 2025-02-07 13:17:54.824 GMT E (93627624) can: can2: intr=15711227 rxpkt=15730955 txpkt=100 errflags=0x22401c02 rxerr=0 txerr=0 rxinval=0 rxovr=0 txovr=0 txdelay=0 txfail=0 wdgreset=0 errreset=0 txqueue=0 2025-02-07 13:17:56.754 GMT D (93629554) events: Signal(vehicle.locked) 2025-02-07 13:17:59.744 GMT E (93632544) can: can2: intr=15716706 rxpkt=15736447 txpkt=100 errflags=0x23401c01 rxerr=0 txerr=0 rxinval=0 rxovr=0 txovr=0 txdelay=0 txfail=0 wdgreset=0 errreset=0 txqueue=0 2025-02-07 13:18:09.144 GMT D (93641944) events: Signal(vehicle.charge.12v.stop) 2025-02-07 13:18:10.144 GMT I (93642944) powermgmt: No longer charging 12V battery.. 2025-02-07 13:18:33.174 GMT D (93665944) events: Signal(vehicle.aux.12v.normal) 2025-02-07 13:18:33.764 GMT E (93666534) can: can2: intr=15754521 rxpkt=15774368 txpkt=100 errflags=0x22401c02 rxerr=0 txerr=0 rxinval=0 rxovr=0 txovr=0 txdelay=0 txfail=0 wdgreset=0 errreset=0 txqueue=0 2025-02-07 13:18:45.174 GMT I (93677944) ovms-server-v3: Connection is <redacted> 2025-02-07 13:18:45.174 GMT I (93677944) ovms-server-v3: Status: Connecting... 2025-02-07 13:18:45.224 GMT D (93677994) events: Signal(server.v3.connecting) 2025-02-07 13:18:48.624 GMT I (93681394) ovms-server-v3: Connection successful 2025-02-07 13:18:48.644 GMT I (93681414) ovms-server-v3: Status: OVMS V3 MQTT login successful 2025-02-07 13:18:48.644 GMT D (93681414) events: Signal(server.v3.connected) 2025-02-07 13:18:49.174 GMT I (93681944) ovms-server-v3: Subscribe to MQTT topics 2025-02-07 13:18:49.174 GMT I (93681944) ovms-server-v3: Transmit all metrics 2025-02-07 13:18:49.464 GMT I (93682234) ovms-server-v3: Subscription acknowledged 2025-02-07 13:19:59.174 GMT D (93751944) events: Signal(vehicle.asleep) 2025-02-07 13:22:29.184 GMT I (93901954) housekeeping: 2025-02-07 13:22:28 GMT (RAM: 8b=79028-81980 32b=12560 SPI=3262992-3285432) 1970-01-01 00:00:08.424 GMT I (7994) command: OpenLogfile: now logging to file '/sd/logs/log' 1970-01-01 00:00:13.474 GMT D (13034) events: Signal(system.event) 1970-01-01 00:00:13.474 GMT D (13034) events: Signal(system.wifi.scan.done) 1970-01-01 00:00:19.424 GMT I (18984) cellular: State: Enter Identify state 1970-01-01 00:00:19.434 GMT I (18994) cellular: Identified cellular modem: SIM7600/Experimental support for SIMCOM SIM7600 1970-01-01 00:00:19.434 GMT I (18994) cellular: Set modem driver to 'SIM7600' 1970-01-01 00:00:19.434 GMT I (18994) cellular: State: Enter PoweredOn state 1970-01-01 00:00:19.424 GMT D (18994) events: Signal(system.modem.installed) 1970-01-01 00:00:19.434 GMT D (19004) events: Signal(system.modem.poweredon) 1970-01-01 00:00:23.474 GMT D (23034) events: Signal(system.event) 1970-01-01 00:00:23.474 GMT D (23034) events: Signal(system.wifi.scan.done) 1970-01-01 00:00:33.474 GMT D (33034) events: Signal(system.event) 1970-01-01 00:00:33.474 GMT D (33034) events: Signal(system.wifi.scan.done) 1970-01-01 00:00:39.434 GMT I (38994) cellular: State: Enter MuxStart state 1970-01-01 00:00:39.444 GMT I (39004) gsm-mux: Start MUX 1970-01-01 00:00:39.444 GMT D (39004) events: Signal(system.modem.muxstart) 1970-01-01 00:00:39.444 GMT I (39014) gsm-mux: Channel #0 is open 1970-01-01 00:00:39.464 GMT I (39024) gsm-mux: Channel #1 is open 1970-01-01 00:00:39.464 GMT I (39024) gsm-mux: Channel #2 is open 1970-01-01 00:00:39.474 GMT I (39034) gsm-mux: Channel #3 is open 1970-01-01 00:00:39.484 GMT I (39044) gsm-mux: Channel #4 is open 1970-01-01 00:00:40.414 GMT I (39984) cellular: State: Enter NetWait state 1970-01-01 00:00:40.414 GMT D (39984) events: Signal(system.modem.netwait) 1970-01-01 00:00:43.474 GMT D (43034) events: Signal(system.event) 1970-01-01 00:00:43.474 GMT D (43034) events: Signal(system.wifi.scan.done) 1970-01-01 00:00:46.054 GMT D (45624) events: Signal(vehicle.awake) 1970-01-01 00:00:50.444 GMT I (50014) cellular: Network Registration status: RegisteredRoaming 1970-01-01 00:00:51.414 GMT I (50984) cellular: State: Enter NetStart state 1970-01-01 00:00:51.434 GMT D (50994) events: Signal(vehicle.aux.12v.blip) 1970-01-01 00:00:51.434 GMT D (50994) events: Signal(system.modem.netstart) 1970-01-01 00:00:51.444 GMT D (51004) events: Signal(vehicle.charge.12v.start) 1970-01-01 00:00:51.434 GMT I (51004) cellular: Network Mode: LTE,Online 1970-01-01 00:00:52.414 GMT I (51984) powermgmt: Charging 12V battery.. 1970-01-01 00:00:52.464 GMT I (52034) cellular: PPP Connection is ready to start 1970-01-01 00:00:53.424 GMT I (52984) cellular: State: Enter NetMode state 1970-01-01 00:00:53.424 GMT I (52984) gsm-ppp: Initialising... 1970-01-01 00:00:53.434 GMT D (52994) events: Signal(system.modem.netmode) 1970-01-01 00:00:53.484 GMT D (53044) events: Signal(system.event) 1970-01-01 00:00:53.484 GMT D (53044) events: Signal(system.wifi.scan.done) 1970-01-01 00:00:53.594 GMT I (53154) gsm-ppp: StatusCallBack: None 1970-01-01 00:00:53.594 GMT I (53154) gsm-ppp: status_cb: Connected 1970-01-01 00:00:53.594 GMT I (53154) gsm-ppp: our_ipaddr = 100.83.212.151 1970-01-01 00:00:53.594 GMT I (53154) gsm-ppp: his_ipaddr = 10.64.64.64 1970-01-01 00:00:53.594 GMT I (53154) gsm-ppp: netmask = 255.255.255.255 1970-01-01 00:00:53.594 GMT I (53154) gsm-ppp: DNS#0 = 8.8.8.8 1970-01-01 00:00:53.584 GMT I (53154) gsm-ppp: DNS#1 = 8.8.4.4 1970-01-01 00:00:53.594 GMT I (53154) gsm-ppp: our6_ipaddr = :: 1970-01-01 00:00:53.594 GMT D (53154) events: Signal(network.interface.up) 1970-01-01 00:00:53.604 GMT D (53164) events: Signal(system.modem.gotip) 1970-01-01 00:00:53.604 GMT I (53164) netmanager: Interface priority is pp2 (100.83.212.151/255.255.255.255 gateway 10.64.64.64) 1970-01-01 00:00:53.604 GMT I (53164) netmanager: Set DNS#2 0.0.0.0 1970-01-01 00:00:53.594 GMT I (53164) netmanager: MODEM up (with WIFI client down): starting network with MODEM 1970-01-01 00:00:53.594 GMT D (53164) events: Signal(network.modem.up) 1970-01-01 00:00:53.594 GMT D (53164) events: Signal(network.up) 1970-01-01 00:00:53.604 GMT I (53174) time: Starting SNTP client 1970-01-01 00:00:53.604 GMT D (53174) events: Signal(network.interface.change) 1970-01-01 00:00:53.614 GMT D (53174) events: Signal(network.mgr.init) 1970-01-01 00:00:53.614 GMT I (53174) webserver: Launching Web Server 2025-02-07 13:44:08.584 GMT I (53184) webserver: Binding to port 80 (http) 2025-02-07 13:44:08.584 GMT I (53184) ssh: Launching SSH Server