Use An OBD!
Thread Starter
Intermediate
Joined: Oct 2025
Posts: 281
Likes: 81
From: Florida
Use An OBD!
Couple of days ago my TX350 popped an idiot light. I checked my info system and two faults appeared. Got my suv into the dealer right away. Got it back next day, all fixed I'm told. Excellent! Get to work and decided to check my info screen and my vehicle issues. They only fixed one of the issues!
If the service department had bothered to either look at my screen or plug in an OBD reader they would have been able to fix everything in one visit. But nooooo! Now I get to make an appointment again and drive there.
Yes, I'm angry. Lexus of Jacksonville obviously had morons working there.
If the service department had bothered to either look at my screen or plug in an OBD reader they would have been able to fix everything in one visit. But nooooo! Now I get to make an appointment again and drive there.
Yes, I'm angry. Lexus of Jacksonville obviously had morons working there.
Thread Starter
Intermediate
Joined: Oct 2025
Posts: 281
Likes: 81
From: Florida
One was Secondary Braking System failure, which is what I verbally told them. Apparently water infiltrated both rear taillights and caused an issue. Of course I am of the belief this should have never happened in the first place, but it did. Then it appears there is a stability control issue. Since I'm unable to remove that "comment" from my screen I am led to believe it is still an issue. I'm also of the belief this would have popped a code that could be read. Am I wrong in my thinking?
Racer
Joined: Jan 2025
Posts: 1,573
Likes: 399
One was Secondary Braking System failure, which is what I verbally told them. Apparently water infiltrated both rear taillights and caused an issue. Of course I am of the belief this should have never happened in the first place, but it did. Then it appears there is a stability control issue. Since I'm unable to remove that "comment" from my screen I am led to believe it is still an issue. I'm also of the belief this would have popped a code that could be read. Am I wrong in my thinking?
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Lexus Fanatic
Joined: May 2012
Posts: 69,226
Likes: 4,222
From: Maryland
Manufacturers have their own proprietary diagnostic tools. They may not use OBD scanners. For instance Mercedes has a system called XENTRY, the car has an OBD port because it has to, and you can read SOME codes and clear some codes through it but dealers don't use an OBD scanner, they use XENTRY. Toyota/Lexus have a similar system called Techstream. An OBD scanner is much less sophisticated.
From what it sounds like to me when you scroll through the menus in your system its showing a remembered fault. What I'm saying is when you hook an OBD scanner up to the car it may not show any faults. The standard OBD system is much less sophisticated than Toyota's techstream so why would the dealer use that?
Your menu may be showing an old issue that isn't current, its just showing a record of prior faults. I have not had a newer Lexus product with those menus but my Mercedes stores that historical data also. Just because it shows there was a fault doesn't mean there is a current one.
Last edited by SW17LS; Jun 19, 2026 at 08:05 AM.
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Lead Lap
Joined: May 2010
Posts: 4,074
Likes: 1,723
From: San Diego, CA
I think Steve has it right. If you pull the OBD data from almost any car you're going to find errors and codes. Sometimes more than you might reasonably expect. Sometimes they are current and reflect actual issues, sometimes they are informational. That we can see them too is helpful, but they are intended more for people with the tools and knowledge to know which ones to worry about and which ones can be ignored. By all means talk to the dealer, but be prepared for the possibility that they saw it and either dealt with it or intentionally ignored it as there was nothing to resolve.
As an aside, apps like Car Scanner have vehicle-specific profiles and if there is one for OP's car it might present the info in a more helpful way.
As an aside, apps like Car Scanner have vehicle-specific profiles and if there is one for OP's car it might present the info in a more helpful way.
Lexus Champion
Joined: Oct 2019
Posts: 18,612
Likes: 1,852
From: Ohio
You need a more advanced scanner to see if the codes are "real" or not, some codes are soft codes that the car doesn't consider an actual issue but did fall outside of ideal range. This is especially common in German cars since they monitor so aggressively, if you know what you are looking at and have live data logs it can let someone who know what they are doing head off an issue
Thread Starter
Intermediate
Joined: Oct 2025
Posts: 281
Likes: 81
From: Florida
I picked up my car yesterday after mentioning to my Advisor I needed to drive a couple of hundred miles today. What happened? A "Dealer Service Required" notice appeared as I was almost to my destination. Now I have to take it in for certain. Had my dealer, Lexus of Jacksonville, been more thorough I wouldn't be in this situation. I guess I'm just not pleased with this current state of affairs on something that could have been avoided.
Lexus Fanatic
Joined: May 2012
Posts: 69,226
Likes: 4,222
From: Maryland
I picked up my car yesterday after mentioning to my Advisor I needed to drive a couple of hundred miles today. What happened? A "Dealer Service Required" notice appeared as I was almost to my destination. Now I have to take it in for certain. Had my dealer, Lexus of Jacksonville, been more thorough I wouldn't be in this situation. I guess I'm just not pleased with this current state of affairs on something that could have been avoided.
CL Community Team
Joined: Aug 2006
Posts: 12,582
Likes: 236
From: San Francisco, CA
I picked up my car yesterday after mentioning to my Advisor I needed to drive a couple of hundred miles today. What happened? A "Dealer Service Required" notice appeared as I was almost to my destination. Now I have to take it in for certain. Had my dealer, Lexus of Jacksonville, been more thorough I wouldn't be in this situation. I guess I'm just not pleased with this current state of affairs on something that could have been avoided.
Last edited by RXSF; Jun 20, 2026 at 10:50 AM.