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CAN Bus attack - Toyota UK bulletin WB853

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31K views 63 replies 21 participants last post by  yotayota  
#1 ·
CAN Bus attack discussed here multiple times and it can be prevented by CAN/LIN immobilizer. But recently I've read a forum here (2022 RAV4 stolen) where Toyota UK bulletin WB853 was mentioned and special shields( part GBNGABRACK01) get installed to block access to CAN Bus through headlights.
Is anyone familiar with it?
Also I have a questions : What is this bulletin WB853 about? Where to get this kit GBNGABRACK01 in North America (or shipped to North America)?

p.s. My car has an immobilizer plus some other surprises but it would be nice to prevent folks to get into car.
p.p.s. This kind of shields can be easy made, but why to bother if you can buy it
 
#4 ·
I only learned about this last week and did see a video showing the thieves access the can-bus near the L/H headlight. Coincidently my RAV4 is booked for service soon. I asked about this issue and was offered a security plate installation for a ÂŁ70 charge. I'll get it done but think Toyota are being a bit mean.
Same story here they break in through headlight.
I would like to see more detailed images of those plates. Posted images in GB forums doesn't show much details.

I've heard of this "security plate" before. Details like part number?
It's GBN GA BRACK01, but no other details or images available.
 
#8 ·
So the bracket secured by torx screws prevents releasing the headlight assembly connector to the wiring harness without removing the bracket first.
The CanBus attack videos I have seen is through the front drivers wheel well. Just in front of the tire is the connector from the body to the front bumper with the wires for all the lights, TSS sensor, etc in that connector. It is that connector that the thieves do the attack, not the connectors to the back of the head lights. You can see that connector at the 3:00 point of this video: 2019 Toyota RAV4 front bumper removal - YouTube

To access the connectors at the back of the headlights would require the front hood to be opened. If your car has the security system, the horn will sound if the front hood is opened while the doors are locked. Thieves would want to avoid that.
 
#10 ·
They gain access through the wheel well but you can see them sticking their arm deep into the engine bay:
Toyota RAV4 2019 - stolen in under 2 min - no key needed - YouTube

DEF CON 31 Car Hacking Village - How an Auto Security Researcher Had His Car Stolen - Tabor, Tindell - YouTube
Def CON talk says this hack is done through the headlight. Mentions the "jbl emergency start"

Searching for that you find many sellers listing different compatibility lists depending which one was bought. e.g 2016 - 2021 or 2019+ or 2016-2023 or 2015-2022

Some promo videos showing connecting to the headlight connector:

2022 Toyota Lexus EMERGENCY START JBL Device no Immo

JBL Emergency Start #opencar #unlockcar #startengine

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You can see the device connecting to two pins in the headlight connector wiring harness.
 
#9 ·
Part number looks strange but that maybe just the UK system?? I know my dealer installs a part# and it starts a NPN01-XXXXX if it is not a OEM TOYOTA part#.

It would be interesting to see stats on thefts on RAV4 and areas. Theft around me is near zero. Highlanders..... That is a whole new level.

My security system is parking beside a Highlander. :p
 
#12 ·
In addition to the shroud around the headlight connector toyota should add a bear trap.
Those morons should install firewall in CAN bus to prevent unlock signal from external points.


So, I can see this Toyota's "security plate" solution is the same like solution for high voltage cable corrosion - we are screwed something up and then trying to fix it with band-aid.
What is the point to secure headlight connector if another connector exists. I guess it prevents only from thieves with hacking devices which have connector for headlight, not ones equipped with two probes.
 
#13 ·
Unless Toyota has been working towards a fix for years and this is also a personal priority of toyota CEO Koji Sato I don't think anything will change to help current toyota owners more than metal bracket bandaids. There are many barriers. People can't get their second key fob owed to them for their pandemic purchased toyotas. Why would toyota do anything expensive proactively for current customers they already have our money. People would have to threaten to not buy more toyotas until they fix security.


The "Calculus of Negligence", it's explained in the movie Fight Club by Tyler Durden when he talks about the "car recall formula". What's the measurable cost to toyota of a few stolen cars? Negligible. Car theft cost are borne by car owners and insurers.
Things need to get crazy to the level of Kia Hyundai car thefts with usb cables to become a factor in the car recall formula.


Security is not usually a feature a salesman can sell. Security is something too complicated to explain. First you have to convince them it's a problem, then you can sell it to them. But to convince them customers their is a security problem you have to advertise that your product is first defective.
Therefore security issues aren't something talked about in consumer products.


When it comes time for the Toyota boss to tell his engineers to do something will the boss direct resources to fix security or build new features? The sales guy can sell more cars if he has a new feature like adaptive cruse control, bigger cup holders, more horsepower, etc., so the boss always makes engineers make new blinky light features.


CAN-BUS firewalls sold by third parties are actually a barrier to fix because they are encumbered by patents and patent trolls. These third party canbus firewalls are also bandaids adding another layer of cruft on top of the existing crap without fixing the underlying problem.


CAN-BUS mostly lacks security so anything that physically connects to so long as it knows what signals to send can say stuff like I'm a hello I'm a headlight or hello I'm a gas pedal or im a bluetooth speaker. Theres no source of security to authenticate that you are who you say you are. Also there's no authorization that restricts any module attached to the can bus to send commands like key is detected, or start engine, press gas pedal and accelerate. That's how the "jbl emergency start" hack tool exploits the canbus to unlocks those cars.
Lots of inexpensive tools for the DIY enthusiast to hack the canbus if you don't want to spend thousands of dollars for the pre-made tool.

Even if toyota had designs adding secured devices and a new new secure car network protocol that replaces the unsecured CAN-BUS, it's a break the supply chain world change logistically with the old and newer cars not being compatible causing burdens for toyota and its suppliers.

Maybe lobby your government to pass yet another nanny law to force auto Toyota to do something about security. The government passed seat belt laws nobody wanted and emissions requirements nobody wanted for sale of new vehicles, so the government could requiring security that toyota doesn't want
 
#17 ·
There is a very simple fix for security. I did this on my 1998 rav4 and have done it again on my 2015 rav4 xle awd. I added a toggle switch oncthe cranking circuit. It looks like the car will run when the key is in the ignition but when you turn it over theres no power to the cranking circuit. I installed the toggle under the dash where you cant see it. I just reach up and click the toggle switch and it turns over as normal. A five dollar fix to make the vehicle super hard to steal. Dont see many thieves whipping out a multimeter trying to diagnose a "short"
 
#24 · (Edited)
Got an email today that Miller Cat came out with their version of plates for $50.
Watch out! The Miller fitment chart may not be accurate. They say this plate is for cars with auto-leveling and adaptive headlights. Most of the RAV trim levels from 2019-2021 did not have them Yet the chart says the plates are for the 2021 XLE. I can confirm my '21 gas model XLE does NOT have such adaptive headlights. I have not looked to see if I have a headlight module that looks like the one in their pictures.
 

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#27 ·
I confirmed by examination that my '21 XLE does not have that module on the headlights and so the Miller application list is WRONG. Also, that Miller plate is just held in with 2 Phillips head screws so what would stop a thief from removing the screws and the plate? They must be assuming thieves are stupid and would not have a screwdriver.
 
#28 ·
From the videos online accessing the headlight connector through the wheel well liner appears to be one of of the ways they plug the hacking tool in. The headlight wiring harness has enough slack so you could pull the connector on the end of the harness through the wheel well.

Difficult to locate the two color coded canbus network wires quickly in poor lighting without the exposed headlight connector.

The hack tool plugs in like this:
Image


The cat shield are like wheel locks in that they only slow the bad guys down.
 
#29 ·
I took a hard look this afternoon at my J-Vin 7/23 born Limited Hybrid using a mirror to inspect both headlamp assemblies underneath for that computer module and rectangular connector and it doesn't exist on mine. The only electrical connectors on my vehicle headlamps is the main 8 pin squareish plug and one to the removable led. I don't see a twisted pair on the main plug so I don't believe there is a Can-Bus wire there. Unfortunately that connector is accessible thru the fender well liner and it does have some slack in the wire but it would be easy to fabricate a bracket to support the loom and place a worm clamp around the wire loom to prevent it from being pulled out..

Every Youtube video I've viewed shows that long rectangular connector in which that JBL Hack device is plugged into.
FKHeath alluded to in a post above saying they attack another connector for the TSS as seen at the 3 min mark in a bumper removal video.
I don't have a electrical wiring diagram so can't say for sure if there is Can-Bus wiring in that connector.
Haven't seen any posts about anyone here in the USA getting their R4H stolen via the Can-Bus hack. Always Canada or the UK.

Yeah, I think that list of vehicles listed by Miller Cat is definitely wrong. Inspect your own vehicle before ordering.
 
#31 ·
W as curious for others, Is there a quck way to see if you have that computer control module visually.
Yes- - you open the hood and use a bright work light. Stick your head down into the far left and right corners of the engine compartment (or use a mirror) and look at the back side of the headlights. You can see if you have that module with screws.
 
#33 ·
Actually, that computer module would be mounted underneath the headlamp assembly if you have it. You could feel for it but a light and mirror would leave no doubt.
It's easy to see if you have the module on the back of your headlights.
 

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#35 ·
I'd try this brake lock instead if in UK or Canada, it's not connected to the steering wheel so not as easy to remove. It prevented my '03 Camry from being stolen.
With the amount of RAVs out there they'll likely just move onto an easier target, though if they drill out or destroy the lock attempting to remove it, it'll probably be a pain in the ass to remove....but better than a stolen Rav.

The Club - CL606

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#36 ·
I've been warned that incidents of Toyota vehicle theft through the moon roof and OBD2 port are occurring in California. I don't know the frequency but it is happening apparently.

Presumably it's the same canbus attack as the headlight. Or it could be the adding of new key fobs.
What's been rumored is the bad guys pop the moon roof to get in and plug into the obd2 port.

The canbus is exposed on the obd2 connector.

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I was thinking of installing a dummy obd2 port that isn't hooked up to the can bus to fool casual thieves as a passive theft deterrent measure.

I was also thinking of hooking a high voltage charge to the dummy plug to the can bus on the dummy plug to blow up their exploit tool. But knowing me I would forget it's there and accidentally cause destruction of my mechanics scan tool at some future vehicle service.

Razor blades or razor wire in the moon roof opening could also be a theft deterrent but I don't think I want blood stains on my upholstery.

Is there a roof rack accessory that doesn't generate too much wind noise and hurt gas mileage I could throw up there to physically block the moon roof as an entry point?
 
#37 ·
I've been warned that incidents of Toyota vehicle theft through the moon roof and OBD2 port are occurring in California. I don't know the frequency but it is happening apparently.

I was thinking of installing a dummy obd2 port that isn't hooked up to the can bus to fool casual thieves as a passive theft deterrent measure.

Is there a roof rack accessory that doesn't generate too much wind noise and hurt gas mileage I could throw up there to physically block the moon roof as an entry point?
You can buy this as a fake obd port: For TOYOTA Dummy OBD2 Port DUMMY OBD ALARM SIREN Anti Theft Security Guard | eBay
To protect moon roof - OEM or aftermarket crossbars will work well in this case. Front cross bar just in the middle of moon roof.
 
#40 · (Edited)
Thanks for the link! I ordered the Dummy OBD2 Port without the siren from that seller. The plug is the correct white colored one and is supposedly OEM, that sold me.
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To protect moon roof - OEM or aftermarket crossbars will work well in this case. Front cross bar just in the middle of moon roof.
I have the OEM crossbar for the TRD but you can still crawl through since it's not centered over the opening.
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I was thinking of a cargo basket but I don't want the wind noise and decreased fuel economy. Or maybe a bicycle mount of some type.


You are certainly being inventive. Perhaps the best defense would be to turn your RAV4 into a kennel for a Doberman.
Unfortunately leaving a Guard dog on sentry inside the car is not legal in California under California PC Section 597.7
PC 597 also allows any passerby to legally break my car windows to get to the Guard dog if there is something inhumane perceived.
Not that illegality prevents breaking of car windows in California.

How about some sort of cap that you can lock? Thieves can perhaps try to remove it, but will likely break it before being able to use it.

Another easy low-tech option is to install (inline) a 3pole single throw toggle switch, and place 3 lines of ODBD-II port on that switch. You can inline (switch) BUS+, CAN High, and K Line. The port is rarely used so you can switch out lines without affecting normal operation of vehicle. Then when you need to use the port you just flip the switch. ;)
I might eventually add a switch so I don't have to get under the dash to restore the OBD2 port for the mechanic. After installing the dummy online port I ordered, I will see how much hassle is involved swapping things manually.
 
#54 ·