To ‘emergency start’ devices (a fiction that these products are for owners who have lost their keys or somehow reputable locksmiths will He tracked down a web site selling more than a hundred products for by-passing car security, from programming fake key fobs
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Ian did some more sleuthing around the dark web, sites that talked about how to steal cars, hunted around forums, and found YouTube videos on car thefts. How could that be? This was the next clue: the ECUs probably hadn’t failed, but rather theĬommunication to them had been lost, and the diagnostics had flagged this as a fault. The hybrid engine control system, and so on. But the DTCs also showed that lots of systems had failed: the control of the front cameras,
Since the thieves had ripped the cables out of it. The DTCs showed that communication with the lighting control ECU was lost.
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RAV4, it’s to also choose which LEDs in a grid are lit up to not dazzle oncoming drivers but still light the rest of the road. To illuminate the corners, to automatically detect if the lights have failed, to turn on pumps to spray water on the lights, and so on. Like motors to level the headlights (so when the car is loaded with heavy luggage, the lights are turned to compensate), steering headlights There is such an ECU because the days of there being a simple switch to turn on lights are long gone: lights are smart, and include things In the front of the RAV4 there is an ECU that controls the lights (the high and low beam headlights and the turn indicators). It turns out that around the theft of the car, Ian’s car dropped a lot of DTCs. And sometimes it’s obvious theĬAN bus has failed: if an ECU’s own messages are not sent, for example, or the CAN bus interface hardware says that communication Some time without hearing anything the listener assumes there’s a fault with the CAN bus or the other ECU. One of the ways an ECU will diagnose a fault is if it doesn’t hearįrom another ECU it needs to talk to, and this is often done with a timeout: if a CAN message isn’t received regularly then after It was invented more than 30 years ago, and is used today in more than cars: it’s built in to boats, farm equipment, aircraft, construction equipment,Īnd even spacecraft (there’s a CAN bus orbiting Mars right now). In modern cars,ĮCUs are connected together with a communications link, running a protocol called CAN bus (CAN stands for Controller Area Network). The fault (it might be the speed of the vehicle, the temperature outside, the battery voltage, that kind of thing). Include a ‘freeze frame’ - a collection of sensor data around the time of the fault, to help a workshop mechanic try to diagnose These are codes that indicate what the detected fault is and when it occurred. The MyT system will send DTCs up to Toyota servers, and the MyT app In the industry, it’s called ‘droppingĪ DTC’ (or Diagnostic Trouble Code). When an Electronic Control Unit (or ECU) detects a fault, it records a code. It’s called ‘on-board diagnostics’ (or OBD for short) and Industry has been adding built-in diagnostic systems to cars for decades. Ian did some more sleuthing, starting with the ‘MyT’ telematics system that’s included in a lot of Toyota cars. AfterĪll, it’s got sophisticated car security systems, including an engine immobilizer. For Ian this is personal and he wanted to know just how they stole the car. But it turns out not: Ian’s neighbour had their Toyota Land Cruiser stolen shortly after. Initially thought from reading his tweet that this might be a trophy hack. Previously been awarded bug bounties for finding vehicle vulnerabilities, and I Ian is a cybersecurity researcher in the automotive space and has And it looks like the headlight was how it was stolen. But it turned out neither incident was vandalism, because a couple of days later: This time the bumper was pulled away and the headlight unplugged. Then three months later it happened again. It seemed like pointless vandalism, the kind of thing that makes it impossible to have nice things. In April 2022, my friend Ian Tabor tweeted that vandals hadīeen at his car, pulling apart the headlight and unplugging the cables. This is a detective story about how a car was stolen - and how it uncovered an epidemic of high-tech car theft.
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