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I have a 2020 RDX Advanced SH-AWD and the speed limit information on the HUD display doesn't show correct speed limit. For example, a road speed limit that used to be 45 MPH and has been lowered more than 2 years ago is now 35 MPH. The display is still showing 45 MPH. This happens in several places where I know the speed limit used to be different.
I've taken it to the dealership about this a few times. My service rep says he's never seen this issue before. The system updates have been done by me as well as updates from the dealership. There is no option in system setup to select either camera or navigation system. Looking for anyone who has the same year/model car that either does or doesn't have this issue. If you don't have the issue, how does your car receive the speed limit information?
I believe the speed limit info comes from the navigation maps. It probably just has not been updated by the map supplier. I doubt there's much you, or the dealer, can do about it except let the supplier know about it but I have no idea how to do that. I've been told that the newer RDXs...2023+?...can read the speed limit signs but I have no confirmation of that.
On my 22 Aspec/Advance I can tell it to use Nav info or use the camera to read signs. I've found the camera to be fairly inaccurate. The Nav is about 98% correct. Not sure if the pre 2022 models have the option to change the source.
The 2020 Owner's Manual states that AcuraWatch contains: Collision Mitigation Braking System, Adaptive Cruise Control, Lane Keeping Assist System, Road Departure Mitigation System
The 2022 Owner's Manual states that AcuraWatch contains: Collision Mitigation Braking System, Adaptive Cruise Control, Lane Keeping Assist System, Road Departure Mitigation System and Traffic Sign Recognition System (TSR)
It appears our 2020s do not include TSR. However, in the past I could swear the HUD displayed the correct information after some speed limit signs were changed near home. Most recently, I have seen the same as you where the incorrect speed limit is displayed on some roads.
I need to schedule my next B1 service soon. I'll ask my service advisor and see what he says.
Thank you. Would love to know if your service advisor knows anything about it. Very frustrating and if it can't be updated seems like a feature that shouldn't have been installed in the vehicle.
TSR is not as critical as you think! I had it on my '21 TLX A-Spec and I had a handful of times where it reported the speed limit as 100 mph!
After enough erroneous reported speed limits, I learned to ignore the camera-captured number. I never opted to switch over to "database mode" because Waze gives speed limit info too!
Great info ! I have a 2023 Aspec advance...what is the default option ? and where can you change it ?
In my non-advance Aspec it's
Settings -> Vehicle -> Meter Setup -> Speed Limit Information
Originally it was set to "Traffic Sign Recognition". This led to some wacky speed limits being pulled in. Around town here the major roads have route numbers and I recall those getting pulled in sometimes. (Never did go up McPhillips Street back then - would've been something to see 180 km/hr as the speed limit!) But what made me change the setting to "Navigation" (ie the map) and not go back was on a side street with default 50 km/hr speed limit where it pulled in "75" from who knows where. Speed limits ending in "5" aren't a thing in Canada since we switched from miles to kilometers decades ago. I'd welcome stories otherwise, but the only time I've seen a 5-ending here was in the Sagkeeng First Nation northeast of Winnipeg years ago.
Settings -> Vehicle -> Meter Setup -> Speed Limit Information
Originally it was set to "Traffic Sign Recognition". This led to some wacky speed limits being pulled in. Around town here the major roads have route numbers and I recall those getting pulled in sometimes. (Never did go up McPhillips Street back then - would've been something to see 180 km/hr as the speed limit!) But what made me change the setting to "Navigation" (ie the map) and not go back was on a side street with default 50 km/hr speed limit where it pulled in "75" from who knows where. Speed limits ending in "5" aren't a thing in Canada since we switched from miles to kilometers decades ago. I'd welcome stories otherwise, but the only time I've seen a 5-ending here was in the Sagkeeng First Nation northeast of Winnipeg years ago.
My 2020 Advance does not have a "Speed Limit Information" option under Meter Setup. Presumably because it does not have TSR.
There are times, however, where the speed limit in the HUD updates precisely as I pass a speed limit sign that differs from what was previously on the display. Could be that the Navigation system is sufficiently accurate or is it possible that TSR was added in one of the system updates? I would imagine all the hardware is in place and it would just require a software update to implement TSR. Wishful thinking, perhaps. Of course, if TSR was added in a system update, I would expect the Speed Limit Information option would be added as well.
My 2020 Advance does not have a "Speed Limit Information" option under Meter Setup. Presumably because it does not have TSR.
There are times, however, where the speed limit in the HUD updates precisely as I pass a speed limit sign that differs from what was previously on the display. Could be that the Navigation system is sufficiently accurate or is it possible that TSR was added in one of the system updates? I would imagine all the hardware is in place and it would just require a software update to implement TSR. Wishful thinking, perhaps. Of course, if TSR was added in a system update, I would expect the Speed Limit Information option would be added as well.
Ron
The Navigation system is pretty accurate, as long as the information in the database is up to date. Is the hardware in your 2020 the same as in my 2023, I'm not sure. The camera used for TSR might have been added or upgraded as part of the 2022 refresh.
What year/model RDX do you have? I don't have that option under my settings, vehicle, meter setup.
2023 Aspec (Canadian version). I found a copy of the press release for the 2022 refresh and Traffic Sign Recognition was a new feature. Uses the camera behind the rearview mirror.
My car is at the dealer and they are looking at it again. The service tech last night said, oh that's just an update. I was told it was updated last month when they had it for the same issue (among other things). I'll let you know what was done and if it worked when I get it back.
I had my RDX in for a B1 service and asked the advisor about TSR. Specifically, can you confirm that TSR is a feature that is functioning on my 2020 RDX and if so, why does the HUD display not update correctly at times when passing some speed limit signs? He said they contacted Acura and were told that there are many conditions where the camera and other equipment TSR uses may not be able to "read" the sign - sunlight, rain, etc. I then asked, so you are telling me that TSR is part of my RDX? He said yes.
I am not convinced. Weather conditions would not explain why a road I travel regularly that is posted 35 MPH always displays 30 on my HUD.
Then again, how do you explain the 100 MPH that displayed one time in my RDX (and others have experienced)? The navigation system certainly wouldn't have a 100 MPH on any road in the U.S. so it would seem the TSR system would have been the one to "mis-read" the speed limit.
Honestly, I don't care if TSR is part of AcuraWatch on my RDX. I like having the speed limit there regardless of where it gets the information and other than the occasional incorrect displayed speed, it is handy to have that info available.
Is it possible there would be something in the three-finger setup in the vehicle that would indicate if TSR is there and enabled? I haven't tried that and I get nervous poking around in there. Even if I went in, I don't know where I would look.
I had my RDX in for a B1 service and asked the advisor about TSR. Specifically, can you confirm that TSR is a feature that is functioning on my 2020 RDX and if so, why does the HUD display not update correctly at times when passing some speed limit signs? He said they contacted Acura and were told that there are many conditions where the camera and other equipment TSR uses may not be able to "read" the sign - sunlight, rain, etc. I then asked, so you are telling me that TSR is part of my RDX? He said yes.
I am not convinced. Weather conditions would not explain why a road I travel regularly that is posted 35 MPH always displays 30 on my HUD.
Then again, how do you explain the 100 MPH that displayed one time in my RDX (and others have experienced)? The navigation system certainly wouldn't have a 100 MPH on any road in the U.S. so it would seem the TSR system would have been the one to "mis-read" the speed limit.
Honestly, I don't care if TSR is part of AcuraWatch on my RDX. I like having the speed limit there regardless of where it gets the information and other than the occasional incorrect displayed speed, it is handy to have that info available.
Is it possible there would be something in the three-finger setup in the vehicle that would indicate if TSR is there and enabled? I haven't tried that and I get nervous poking around in there. Even if I went in, I don't know where I would look.
Ron
Not sure why you and others are so hung up on Acura's version of TSR. I have never found the car one (of any make) to be rock-solid reliable. Just use Waze or Google Maps for the most current speed limits (seriously...).
For the 2020, since it doesn't have TSR, the only speed limits it gets are from the maps. You'd have to update the map to update speed limits, by following steps at acuranavi.navigation.com. It is a free update for the first few years of ownership, then you'd have to pay. No guarantee they would have gotten to updating your street's speed limit in any given map version, but the TSR speeds in the newer models are uploaded to Acura's map supplier so they should eventually update maps with the change.
If the map is still free then the investment is probably just a download/wait for the install. If the car is older, it will be that plus a map cost. If you are ever in a service loaner, you can turn off TSR and see if the latest map has updates for your street, to know whether you want to bother with a map update.
For the 2020, since it doesn't have TSR, the only speed limits it gets are from the maps. You'd have to update the map to update speed limits, by following steps at acuranavi.navigation.com. It is a free update for the first few years of ownership, then you'd have to pay. No guarantee they would have gotten to updating your street's speed limit in any given map version, but the TSR speeds in the newer models are uploaded to Acura's map supplier so they should eventually update maps with the change.
If the map is still free then the investment is probably just a download/wait for the install. If the car is older, it will be that plus a map cost. If you are ever in a service loaner, you can turn off TSR and see if the latest map has updates for your street, to know whether you want to bother with a map update.
That's the beauty of Waze/Google. Someone else is paying for the update and it's always updated!
That's the beauty of Waze/Google. Someone else is paying for the update and it's always updated!
Yes I prefer google and it can send the next turn instruction to the HUD. However the HUD speed limits still come from the Acura nav, despite Waze/Google showing their speed limits on the center tablet.
I just use CarPlay with Apple Maps. In general much more accurate with speed limits plus shows traffic lights, stop signs, stop lights equipped with red light cameras, and accidents.
I have a couple of posts with pictures about Acura showing 80 or 100 mph speed limit while I'm stopped at a traffic light.
My tech has told me it's read by the nav system. I have a 2024 MDX loaner at the moment and changed it to nav from TSR and it's doing the same thing my RDX is doing. Seems Acura doesn't have the updated maps.
My speed limits are out of date for some roads that changed in the last couple of years, thanks for the link I will get that a try!
That is hoping the map update is correct. I actually had many roads around me that are 25 mph, and are still 25 mph, somehow the acura navi update now lists them as 35 mph. This error happened a couple years ago and has not been fixed yet. I wish there was a way to turn this visual off, as the inaccuracy can cause a driver issues (i.e. speeding ticket), especially if a traffic sign is missing from the road itself.
I did this a couple of months ago and no speed limits were updated in my area. I would suggest before going through the process since it takes time, check to see if you have the most recent map version. You will need the database version from your car. If you scroll all the way down on the map information page (after you enter your year and model) you will see where you can check the map version. For the RDX you can find it under: 'Menu' of your navigation system, select 'Help' and then 'About'. The map version is listed in the following format YYYY.MM.DD.
I just had a 2024 MDX loaner and I switched it from camera to nav system. The 2024 displayed the information incorrectly just like my 2020 RDX does.
I updated my 2022 to the latest map version today. There is a stretch of road on my commute that changed from 50 to 60 a couple years ago and the Nav has always shown 50. After the update it is now correctly showing 60. Funny enough Apple Maps still shows 50.
The manual for my 2022 RDX (Base, SH-AWD) has the following information. I don't have a navigation system so it would seem my display would then default to what the onboard camera determines. Now, as others have mentioned they sometimes see 100 mph. I do as well, and specifically at a point where there is a bridge height sign adjacent to the road. It is repeatable so I'm inclined to be the system can be confused by numbers on signs.
"Shows the current speed limit based on either information compiled through the navigation system* or speed limit signs captured by the front sensor camera. The system displays the ones that are recognized as designated for your vehicle. The sign icon will be displayed until the vehicle reaches a predetermined time and distance. If the system does not detect any traffic signs while you are driving, the sign icon will not be displayed.
Since posting my previous comment I have been observing when my dash speed indicator indicates "100 mph". The algorithm that determines what gets posted on the dash seems to be definitely confused by some highway signs; see one immediately below that is for PA Route 100. That particular sign consistently causes the vehicle to display "100 mph" and within a split second of passing the sign.. It also occurs on numerous other Route 100 markers in my travels.
Since posting my previous comment I have been observing when my dash speed indicator indicates "100 mph". The algorithm that determines what gets posted on the dash seems to be definitely confused by some highway signs; see one immediately below that is for PA Route 100. That particular sign consistently causes the vehicle to display "100 mph" and within a split second of passing the sign.. It also occurs on numerous other Route 100 markers in my travels.
Again, no navigation on my 2022 RDX but I also noticed today in my travels that as I pass a PA Route 30 sign, the dash display says 30 mph, even though I'm in a 45 mph zone. And just down the road is a 55 mph sign and that bumps the dash display to 55 mph (as it should).
Speed Limit Information
