i accidentally cut 4 wires from my wiring harness next to the left driver side fender where the fuse box is. All electrical components in the car works: windows, trunk, lights, nav, radio, etc, etc. Only one problem is: the car won't start and the brakes are extremely stiff! Check ABS and check VSC lights are now flashing. After cutting those wires, i stripped the wires and soldered them back together and triple checked my work if they were soldered on corrected with the matching wires. Still, car won't start. Also, I tried to connect my OBD2 scanner in to try to reset codes, but it would not connect to my car! That is why, i am assuming it is the ECU that shorted or something. I checked all fuses throughout the car and nothing is burnt out. What should I do? DEALERSHIP OR BODY SHOP? I NEED INPUT PLEASE!

 

Dealership. You could attempt to reset ABS/VSC System, but the no start is a mystery.

DTC CHECK/CLEAR (WHEN USING SST CHECK WIRE

(a) DTC check




1) Using SST, connect terminals TC and CG of the DLC3.

SST: 09843-18040

(2) Turn the engine switch on (IG).

(3) Read DTC from the ABS warning light on the combination meter and multi information display

(4) As an example, the illustration below shows the blinking patterns of the normal system code and trouble codes 31 and 43, and display of the normal system code and trouble code 31 on the multi information display.




(5) Codes are explained in the code table .

(6) After completing the check, disconnect terminals TC and CG of the DLC3, and turn the display off.

If 2 or more DTCs are detected at the same time, the DTCs will be displayed in ascending order.

(b) DTC clear
(1) Using SST, connect terminals TC and CG of the DLC3
(2) Turn the engine switch on (IG).

(3) Clear the DTCs stored in the ECU by depressing the brake pedal 8 times or more within 5 seconds.


(4) Check that the warning light and multi information display indicate the normal system code.

(5) Remove the SST from the terminals of the DLC3.

SST can just be a jumper wire.

 

boy that's just scary how did u accidentally cut those wires ? four wires at the same time ??

 

Oh boy hope you can get it started again. Still should take to the service department at a Lexus dealership. Might be an easy fix for them.

 

always dealership for those type of problems. No need to ask whether dealership or body shop

P.S. have you tried disconnecting the battery and letting it sit for about 15-30 minutes? Just throwing it out there, it might help

 

i did this and no codes appeared. but, new warning signs came on. instead of check vsc/abs, these warnings came on: Brake Malfunction, Check Power Steering System, Check ABS. those 3 errors came on. I tried to clear the DTCs with the method you've told me, and it won't clear those warning signs. When i take out the wires from the TC and CG, my old warning signs (check vsc/abs) came on again. any more advice for me?

 

yeah i've tried that too. i even bought a new battery thinking that was the problem. but was wrong.

 

leave your batter disconnected for an hour. It will clear and reset any codes that are stored. If they come back then there is an issue.

 

Something is fried....

 

yeah... i left it disconnected for 24 hours...

 

Show a pic of where the wires were damaged, and what colors are tthe wires?

 

I would revise that....... if you have to ask than dealer.

 

Yeah, at this point I wouldnt mess with it. Have it towed down to a dealership. I can imagine they can replace hopefully just the harness, but if its tied to a larger unit prepare for some heart ache

 

do you have a diagram or access to of what the functions for each wire color are? thanks for your help!!

 

I do if you can provide a pic and any info on what connector it is.