Need help with adaptive cruise

[jdgreen]

We've had our ORP for just a few days and we're having some difficulty with the Dynamic Radar Cruise Control. After starting the engine and engaging DRCC, the DRCC icon on the multi-information-display always shows 19 mph and the 4R accelerates to that speed from dead stop even after the car has been turned off. Has anyone else had a similar experience and know what to do about it? I've reset the DRCC to other speeds, but after disengaging and re-engaging DRCC, it goes back to 19 mph. It's quite hazardous since it takes off without being told to. If nobody here can help, I'll make the 70 mile drive back to the dealership. Thanks

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[run4eb]

We've had our ORP for just a few days and we're having some difficulty with the Dynamic Radar Cruise Control. After starting the engine and engaging DRCC, the DRCC icon on the multi-information-display always shows 19 mph and the 4R accelerates to that speed from dead stop even after the car has been turned off. Has anyone else had a similar experience and know what to do about it? I've reset the DRCC to other speeds, but after disengaging and re-engaging DRCC, it goes back to 19 mph. It's quite hazardous since it takes off without being told to. If nobody here can help, I'll make the 70 mile drive back to the dealership. Thanks

This seems odd. I have been using the Adaptive Cruise Control and absolutely love it. Whatever speed I am going when I engage is what it locks at until disengage. Then when I reengage at a different speed it grabs that. Then you can of course click the speed up or down from the steering wheel. I have been very impressed with how it stays in the lines and sets the speed as a threshold and slows down accordingly to the cars speed in front of me. I also love that I am able to accelerate past my threshold cruise control speed and ACC stays engaged.

Ultimately, I would say if any of those things sound like they aren't happening for you I would go get it checked out. But that is my limited experience with it so far.

 

[Nodak]

so if i am reading your post correctly. you are engaging CC from a stop? of course its going to blast to 19 mph from a dead stop.

radar CC is suppose to be using while in traffic at speed. not from a dead stop.

it will adjust down or up depending how far away a vehicle is from your front bumper (denoted by the distance bars in the display). it will pace a vehicle in front of you all the way down to zero mph and up to the set limit while on the highway or around town.

if no vehicle is in front of you, it will attempt to reach the set speed as quickly as it can.

if you are using radar CC as a right foot replacement, it wasnt designed to be used like that.

i only say this because thats how i read your post.

 

[jdgreen]

so if i am reading your post correctly. you are engaging CC from a stop? of course its going to blast to 19 mph from a dead stop.

radar CC is suppose to be using while in traffic at speed. not from a dead stop.

it will adjust down or up depending how far away a vehicle is from your front bumper (denoted by the distance bars in the display). it will pace a vehicle in front of you all the way down to zero mph and up to the set limit while on the highway or around town.

if no vehicle is in front of you, it will attempt to reach the set speed as quickly as it can.

if you are using radar CC as a right foot replacement, it wasnt designed to be used like that.

i only say this because thats how i read your post.

I can sort of understand what you're saying, but this thing sets it's own speed (19) from the instant DRCC is turned on and slowly accelerates as soon as the brake is released. It seems logical that when the engine is turned off, the speed set in DRCC would default back to zero for the next start as standard cruise does. There are no other cars for it to pace in my 1/4 mile long driveway, but it seems to trying to catch them anyway. I've driven other cars with dynamic cruise and they behaved appropriately. Toyota will have to try to sort this out.

 

[Nodak]

I can sort of understand what you're saying, but this thing sets it's own speed (19) from the instant DRCC is turned on and slowly accelerates as soon as the brake is released. It seems logical that when the engine is turned off, the speed set in DRCC would default back to zero for the next start as standard cruise does. There are no other cars for it to pace in my 1/4 mile long driveway, but it seems to trying to catch them anyway. I've driven other cars with dynamic cruise and they behaved appropriately. Toyota will have to try to sort this out.

if that is the case you need to take it back to a toyota dealer and have it serviced immediately. thats a safety issue. it should never be like that unless you turn on the CC (it defaults to radar, or hold the CC button until the MID screen says constant speed control aka old fashion CC)

 

[Mudbath]

Why would you start the engine and engage it? I must not be understanding you correctly.

Here is a picture of the right side of the steering wheel, from the owner's manual. Drive your car on the freeway, or an open road where using cruise control is appropriate and get up to the speed you want to set the cruise control at. For this discussion we will say 55mph. Accelerate to 55 and then press the button the pink arrow is pointing to. That will set your dynamic radar cruise control. The lever just to the right will allow you to adjust the speed up or down.

If you push the lever up, wait for it, the speed goes up. Each push up is +1 mph. Each push down is -1 mph.

My reply is somewhat tongue in cheek, because I am pretty sure you know all this. I've just never heard of someone setting the cruise control as soon as they start the engine. WTF?

 

[Mudbath]

Here is a direct link to the digital owner's manual 2025 4Runner Hybrid - Dynamic radar cruise control | Toyota Owners page that talks about the radar cruise control.

You might need to create an account to access it. If you don't have an account, I encourage you to set one up, the online manuals are quite handy (and you might even learn some cool new stuff about your new truck).

 

[LLL1990]

After starting the engine and engaging DRCC, the DRCC icon on the multi-information-display always shows 19

I can sort of understand what you're saying, but this thing sets it's own speed (19) from the instant DRCC is turned on and slowly accelerates as soon as the brake is released.

Why are you engaging DRCC at a stop after starting the engine? How is it supposed to know what speed you want to cruise at when it's idling; is it supposed to guess? It's cruise control, you set it when you are at the speed you want it to maintain. It's probably showing 19 because that may be the lowest speed it's able to accept.

 

[Archer]

I don't think you can engage it when your holding the brake. If it does, take it to the dealer.

 

[jdgreen]

Enough of you are saying the same thing so evidently DRCC shouldn't be turned on until up to speed. That would be different than standard cruise which can be turned on any time and it just sits there waiting for the driver to tell it how fast to go. Okay, I surrender !

Now I need someone to tell me why the seat/steering wheel, mirror memory isn't working. I've programmed according to the manual; adjust everything to suit me, press "set", then press "1" or "2" until it beeps. The seat and steering wheel work once or twice, then quit. The mirrors don't move. Is it dependent on a key fob being nearby or having a profile set up? I've done both.

 

[Archer]

Enough of you are saying the same thing so evidently DRCC shouldn't be turned on until up to speed. That would be different than standard cruise which can be turned on any time and it just sits there waiting for the driver to tell it how fast to go. Okay, I surrender !

Now I need someone to tell me why the seat/steering wheel, mirror memory isn't working. I've programmed according to the manual; adjust everything to suit me, press "set", then press "1" or "2" until it beeps. The seat and steering wheel work once or twice, then quit. The mirrors don't move. Is it dependent on a key fob being nearby or having a profile set up? I've done both.

I'm having similar issues with my seats, rear lift gate, rear window, rear seat belt, moon roof alarms.

I'm thinking they had a problem during the initial startup of the Computer system. I'm wondering if a hard restart from the dealership wouldn't help. I may call them today.

 

[Nodak]

it seems someone didnt do a proper PDI on your vehicle.

to many defaults are not set from what you are saying. there is a seat position learn mode that PDI is suppose to set so the seats know where the limits are (fore,aft, up, down, tilt)

 

[jdgreen]

Nodak,
Your comment didn't help me program the seat. I ask questions because i need answers. If you know how to program the seat, tell me. Otherwise...

 

[spyder40]

Nodak,
Your comment didn't help me program the seat. I ask questions because i need answers. If you know how to program the seat, tell me. Otherwise...

I believe what he is saying is the dealer didn't do the initial setup/make sure everything is clear/defaults are set before delivering the car to you and is why you are having odd results.

 

[jdgreen]

Spyder40,
I appreciate your comment.
I understand what Nodak is saying and he's correct; the pdi I received was nearly useless. She took all of 5 minutes and I knew some of what she was saying was incorrect. But sometimes one doesn't know what questions to ask, so we go away without answers. I'm reasonably good with electronics, and I do read manuals so assumed that when I left the dealership, I could work through issues that always come up. But I've been unable to get a couple things resolved. I just noticed that Archer is having similar seat programming issues.
I'll eventually go back to the dealer, but since he's 70 miles away, I can't just pop in. We paid for all these features, and by golly, I want to know if/how they work even if I won't need them all later on.

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