Effing Ffff P0504
#1
Driver School Candidate
Thread Starter
Effing Ffff P0504
new to the forum, been browsing it for the last 2 weeks but can’t find the answer I need. Hoping I can get some help. Just bought this is350 2 weeks ago and went on a 2 hour drive and 20 min of highway driving in, I got the P0504 code. Brake sensor A/B. Bought a new sensor, took it to a Lexus dealer and cleared the code. Went back on my drive and 20 min in. Same effing code. So ordered a factory part from Lexus for $90 flippin bucks and installed it. Drove on the highway for the first time today and literally, right at the 20 minute mark of driving....****ing code comes up again. Wtf is going on? Could be it something other than the sensor? This is driving me crazy!
#3
Driver School Candidate
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Ya I had the dealer check all the bulbs and they think it might be some internal wiring to the ECU? To me that seems like a way to scam some money out of me. But all bulbs are working
#5
Lexus Test Driver
iTrader: (2)
If you clear the CEL again, see if the cruise control works. Keeping in mind that it may not deactivate with a brake tap. You may have to manually turn it off.
I am not responsible for advice given, your car, your safety, or anyone else for that matter, or the use of the above information. Proceed at **your own risk!!**
I am not responsible for advice given, your car, your safety, or anyone else for that matter, or the use of the above information. Proceed at **your own risk!!**
#6
Driver School Candidate
Thread Starter
If you clear the CEL again, see if the cruise control works. Keeping in mind that it may not deactivate with a brake tap. You may have to manually turn it off.
I am not responsible for advice given, your car, your safety, or anyone else for that matter, or the use of the above information. Proceed at **your own risk!!**
I am not responsible for advice given, your car, your safety, or anyone else for that matter, or the use of the above information. Proceed at **your own risk!!**
Didnt see a tow hitch either.
I think im going to take a voltage meter and start tracing wires now....this should be fun
#7
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Join Date: Sep 2020
Location: Lagos
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