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DRCC and standard cruise control settings.


SDR
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This is a "Does anyone know how to?" post.

The mode button on the rhs of the steering wheel allows me to switch between drcc, standard cruise control (non-adaptive) and speed limiter.   I find that, mostly, I prefer the standard, non-adaptive, cruise control and would like this to remain set when the car is switched off.   Annoyingly, the car defaults back to drcc when I re-start.   

OK, it's not a big deal, just requires 2 presses of the mode button to sort (to add to the list...).   However, I have been looking for a setting to change so that the mode stays 'as is' when the car is switched off and back on.   I have failed to find such a setting ☹️.    Anyone any ideas please?

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My guess is the default setting when you start the car is what you are stuck with.  May I ask why you prefer standard CC over DRCC?

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3 hours ago, JasonM said:

My guess is the default setting when you start the car is what you are stuck with.  May I ask why you prefer standard CC over DRCC?

That would seem to be so, since I can't find any setting to change it and no-one has come up with a solution (but I haven't explored the hidden menu yet...).

As to why...   I do use DRCC sometimes but generally prefer standard CC on this car.   

Partly, it's about how I use it, e.g. I use it on a couple of local roads subject to 30/40 limits and find that the DRCC reacts to parked cars (hits the brakes).   I didn't think that it would/should react to stationary vehicles but sometimes it does.   Now, I know that this may not be an intended use for CC, generally, but the roads in question are subject to frequent speed enforcement and it just suits me to set CC.

Partly, it's because I don't find the DRCC to be particularly smooth, either in braking or acceleration, on faster roads (which is, I would say, its intended use);   and I have changed acceleration to its lowest setting in the DRCC menu.   It works, sure, but I don't find it to be a particularly pleasant experience and, frankly, I can do a lot better myself.   I can also see a lot further ahead, can anticipate, etc., which it cannot do.    So I tend to only set CC when there is minimal traffic, in circumstances where standard CC is fine, and drive 'manually' in other circumstances. 

Just personal preference. 

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Yes I agree with you, and prefer to use the DRCC on less busy roads.  I find if I get stuck behind a slower vehicle and pull out to overtake on a dual carriageway if cars are approaching from behind quickly I end up becoming an obstruction myself while the car builds up speed.  On motorways I prefer to be in sport mode for that reason.  I also have a problem with my DRCC cutting out when approaching slower vehicles especially downhill.  Toyota are trying to fix under Warranty, going in for the forth try in a few weeks time🤞

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1 hour ago, JasonM said:

I find if I get stuck behind a slower vehicle and pull out to overtake on a dual carriageway if cars are approaching from behind quickly I end up becoming an obstruction myself while the car builds up speed.

Relying on DRCC to handle acceleration in that scenario seems inappropriate anyway. DRCC is (as the CC implies) for cruising. It's to assist the driver in maintaining a steady speed (with respect to other traffic in the case of DRCC).

Once you decide to perform an overtake DRCC should be overridden. It has no business being left in charge of the vehicle if the vehicle is no longer cruising.

The only issue I've encountered with DRCC is if a vehicle leaving the road ahead of me via a slip road slows early in which case the DRCC sometimes slows me even though a collision is not likely. It's not a common occurence but can happen if the slip road is busy.

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1 hour ago, JasonM said:

Yes I agree with you, and prefer to use the DRCC on less busy roads.  I find if I get stuck behind a slower vehicle and pull out to overtake on a dual carriageway if cars are approaching from behind quickly I end up becoming an obstruction myself while the car builds up speed.  On motorways I prefer to be in sport mode for that reason.  I also have a problem with my DRCC cutting out when approaching slower vehicles especially downhill.  Toyota are trying to fix under Warranty, going in for the forth try in a few weeks time🤞

On occasions when I do use DRCC on multi-lane roads, and because I have acceleration at the lowest setting, I simply give the system some help with my right foot if necessary.   At least you can do that without cancelling your set speed.

Sorry to hear that you are having problems with it.   AFAIK mine is working as it should even if, IMHO, it's still no match for a Mk1 human in overall capability.

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On 6/28/2024 at 7:40 PM, AndrueC said:

Relying on DRCC to handle acceleration in that scenario seems inappropriate anyway. DRCC is (as the CC implies) for cruising. It's to assist the driver in maintaining a steady speed (with respect to other traffic in the case of DRCC).

Once you decide to perform an overtake DRCC should be overridden. It has no business being left in charge of the vehicle if the vehicle is no longer cruising.

The only issue I've encountered with DRCC is if a vehicle leaving the road ahead of me via a slip road slows early in which case the DRCC sometimes slows me even though a collision is not likely. It's not a common occurence but can happen if the slip road is busy.

I would disagree, the whole point of DRCC is to allow the car speed to modulate according to traffic conditions and to allow you to overtake using DRCC, if it didn’t achieve this it would be no better than conventional CC.  Toyota’s own video explaining how to use DRCC shows highway driving amongst traffic and overtaking with DRCC on.    I agree with SDR and sometimes help the DRCC with overtaking with some pedal input, just a pity my car has the deactivation fault.  I took a local dealers courtesy car out for a long test drive and the DRCC worked perfectly so know there is an issue and looking at the various forums seems I am not the only one with this issue.   If I get it fixed will post outcome.

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