Electrical issues after rear end, several

Hello.

so this is definitely an interesting one…

I was rear ended 3-4 months ago.. shop had to paint it 6 times to finally get paint blended right and correct color (blizzard pearl).

anyways, the car is having issues with with mostly convenience features, but some ecu issues.

the wreck involved me replacing rear bumper, and the c pillars were caved in about the size of a baseball. Reinforcement bar was replaced. Bout $3,000 in damages; nothing terrible. It did cause the air bag light to have to be recalibrated at Toyota.

honestly the wreck didn’t feel that bad to me. But after picking the vehicle up, the car has so much not working on it.

heat/air controller won’t come on, windows won’t work all around, daytime running lights won’t work, automatic headlights won’t work, but will work if turned on (this and the interior lights both cut off driving, then started working again). Ambient air sensor not working shows an E on the dash. radiator fan stays on full blast, grille shutter will not work. OBD port will not work. The car will not remember the time and it keeps resetting driver settings like eco mode normal mode or pwr mode. Battery is new and tests good.

They have replaced the daytime running lights, fuse Keeps blowing after about 60 seconds. Toyota is supposed to be getting the main person over the whole east end of the United States out to check it, but could be months.

I’m wondering if body control module, or ecu could of got out of wack from the impact or it jarred something? Pinched wire somewhere? I just don’t understand how all this is going on… but it sucks. I’ve been without it for almost 4 months now

Pictures uploaded of wreck on scene, barely hurt, and when the bumper was off (with the new Toyota impact bars installed etc.)

And then the final outcome of the car

this has been a nightmare and I’m really wondering what in the world could even be going on

 

Oh I agree with you. Tell the master techs at Toyota that lol. I’ve been without it forever, quite annoying. But I’m posting here to see if anyone has any decent ideas.

 

if only a Toyota Mastertech knew that. Guess they either Havnt went that route or avoiding it.

 

not my job to trace it down. It’s most likely due to the wreck, insurance can pay it out. I shouldn’t of been rear ended.

this car never had issues, so I’m bout 99% sure this is wreck related

 

I want to first thank everyone for the replies!

I really didn’t want to attempt to tackle this as a DIY, but I may tackle or attempt to tackle some of this stuff. I do wiring for solar systems, and know how to do house wiring, but I have never been good at tracking wiring down, or finding where a break is or where it’s shorting etc…

I guess that is what has put me off from this, the other part of it, is I’m terrified of the amount of wired this car has… because it is basically fully loaded…

I know I have bmw dealership software, I had to pay $100 to get it on a hard drive. How easy is it to obtain the tech stream software and diagnose the vehicle?

I guess it’ll basically point me where the issue is, or which circuit or wire I’m needing to “inspect”?

thanks again so much. This will definitely be a task or journey for me, that I’m not 100% comfortable with, but I’ll attempt it if I can, or atleast some of the parts I feel comfortable tackling.

 

Alright downloaded tech stream. Now just have to flash my obd connector to get it to work… and wait for my car to get out of being detailed back, once I get it back I can attempt to connect to it and follow up with whatever errors tech stream finds, and hopefully be able to trace down the issues it’s having.

 

Well, it won’t flash my obd 2 connector to connect from the car to the pc… so, I’m probably going to have to order a cable specific for this process, and then flash the software.

I have a good feeling I know where the pinched wires are… looks like the wiring runs up right there at the c pillar where it caved in on both sides… I bet that is where it’s shorting or is causing issues…

tried to hook my self driving tool back up
Through the obd 2, fuse blew again… which is expected because I’ve not traced anything but I figured I’d use it again if I could until I figure this out…

I may try to tamper around with the obd 2 tool again n keep finessing it, might get it to download and flash the software at some point n not have to order one.

 

Was progressive. I’ve dropped them since then. The person who’s hit me is with Trexis. All insurance companies are a scam anyways. My car burned n progressive is doing everything they can to not pay out. I won’t ever own insurance again.

 

Just wanted to update this issue. Was using a comma 2 ai for self driving. Turns out it had a short, which caused it to blow the ecu ig 2 fuse, ecu ig 4 fuse, and obd 2 fuse. This in turn caused every single issue I was having…

Toyota of Morristown tn didn’t figure out a thing, and was a joke to say the least. However Toyota of Knoxville found this issue and didn’t charge me a penny. Even though their tech hooked up tech stream and spent a solid hour with the car.