Paul P Posted August 11, 2022 Report Share Posted August 11, 2022 I like brake hold. Daily has that (even though it’s a manual) and I goes a stage further - an extra “dab” on the brakes when stationary basically latches the brakes on. Brake lights stay on and you can take your feet of the pedals. It auto releases as you pull away. It’s different from the handbrake in operation, and as you say. Becomes 2nd nature. Quote Link to comment Share on other sites More sharing options...
GTSMarky Posted August 12, 2022 Report Share Posted August 12, 2022 No brake hold on the 981, but daily Audi has it and it's instinctive to use. My BMW GS motorcycle has it too and again it's instinctive and I use it regularly. Amazing how many GS riders have no idea about the function! Quote Link to comment Share on other sites More sharing options...
iborguk Posted August 12, 2022 Report Share Posted August 12, 2022 Got coast to engage on mine today by upshifting all the way up and I was on a gentle incline. Quote Link to comment Share on other sites More sharing options...
moospeed Posted August 12, 2022 Report Share Posted August 12, 2022 23 hours ago, ½cwt said: Quite the opposite... I have stop/stop on the daily and in that context it saves both emissions and fuel. I make up for it a weekends in a 3.2 986 🤣 I'd imagine that stop/stop must be the ultimate fuel saver, literally no emissions ever. Makes for slow progress though. Quote Link to comment Share on other sites More sharing options...
iborguk Posted August 12, 2022 Report Share Posted August 12, 2022 19 minutes ago, moospeed said: I'd imagine that stop/stop must be the ultimate fuel saver, literally no emissions ever. Makes for slow progress though. "I like to mooove it mooove it...." Quote Link to comment Share on other sites More sharing options...
Paul P Posted August 12, 2022 Report Share Posted August 12, 2022 7 hours ago, moospeed said: I'd imagine that stop/stop must be the ultimate fuel saver, literally no emissions ever. Makes for slow progress though. Placebo effect but the daily switches from “mpg” to gallons per hour (or whatever metric nonsense equals that) and when “stop” cuts in it reads zero - makes you think you are winning. Quote Link to comment Share on other sites More sharing options...
BrianJ Posted August 14, 2022 Report Share Posted August 14, 2022 On 8/12/2022 at 10:58 AM, GTSMarky said: No brake hold on the 981 Puzzled by that. Thought it was standard. Both mine have had it. Release footbrake on hill and car stays put until you pull away, “hold” lights on dash. But I accept different manufacturers call it different things. And I hate coasting, turn off stop/start to prevent it. Quote Link to comment Share on other sites More sharing options...
Richard Hamilton Posted August 14, 2022 Report Share Posted August 14, 2022 From the 981 Service Technik:The Auto Start Stop button (1) switches the Auto Start Stop function on and off and activates and deactivates coasting mode. When the system is switched off, the indicator light in the button lights up red. Prerequisites for coasting mode: • Driving with selector lever in position D • Coasting mode activated (indicator light in the button [1] off) • Sport or Sport Plus mode deactivated • PSM active • Control cruise mode not active • Engine, transmission and battery have reached operating temperature • Relaxed/economic driving style • Slight uphill or downhill gradient • Remove foot slowly from accelerator pedal From the description of PSM9.0 in the Technik: The new standstill management function (Auto-hold function) prevents the vehicle from rolling back in the opposite direction to the desired driving direction. If the vehicle is braked to a stop on a gradient, the Auto-hold function is active and the required brake pressure is maintained via PSM. On vehicles with Porsche Doppelkupplung (PDK), the Auto-hold function also holds the vehicle if the driver allows the vehicle to coast to a stop on a gradient. As soon as the vehicle comes to a stop without braking, the brake pressure is maintained via PSM for holding the vehicle on the gradient until it moves off again. The hold function is transferred to the electric parking brake after 5 minutes or if the system detects that the driver intends to leave the vehicle. So it would seem like auto-hold would be standard on the 981. I know that with my 982 I have to give the pedal a bit more pressure after I have come to a stop for it to engage. 1 1 Quote Link to comment Share on other sites More sharing options...
Richard Hamilton Posted August 14, 2022 Report Share Posted August 14, 2022 (edited) Deleted Edited August 14, 2022 by Richard Hamilton Quote Link to comment Share on other sites More sharing options...
iborguk Posted August 14, 2022 Report Share Posted August 14, 2022 4 minutes ago, Richard Hamilton said: I know that with my 982 I have to give the pedal a bit more pressure after I have come to a stop for it to engage. Yes, I've found that too, second nature now. Quote Link to comment Share on other sites More sharing options...
½cwt Posted August 14, 2022 Report Share Posted August 14, 2022 7 minutes ago, Richard Hamilton said: From the 981 Service Technik:The Auto Start Stop button (1) switches the Auto Start Stop function on and off and activates and deactivates coasting mode. When the system is switched off, the indicator light in the button lights up red. Prerequisites for coasting mode: • Driving with selector lever in position D • Coasting mode activated (indicator light in the button [1] off) • Sport or Sport Plus mode deactivated • PSM active • Control cruise mode not active • Engine, transmission and battery have reached operating temperature • Relaxed/economic driving style • Slight uphill or downhill gradient • Remove foot slowly from accelerator pedal From the description of PSM9.0 in the Technik: The new standstill management function (Auto-hold function) prevents the vehicle from rolling back in the opposite direction to the desired driving direction. If the vehicle is braked to a stop on a gradient, the Auto-hold function is active and the required brake pressure is maintained via PSM. On vehicles with Porsche Doppelkupplung (PDK), the Auto-hold function also holds the vehicle if the driver allows the vehicle to coast to a stop on a gradient. As soon as the vehicle comes to a stop without braking, the brake pressure is maintained via PSM for holding the vehicle on the gradient until it moves off again. The hold function is transferred to the electric parking brake after 5 minutes or if the system detects that the driver intends to leave the vehicle. So it would seem like auto-hold would be standard on the 981. I know that with my 982 I have to give the pedal a bit more pressure after I have come to a stop for it to engage. Sounds. not surprisingly, much as the system works on other VAG vehicles too. Quote Link to comment Share on other sites More sharing options...
GTSMarky Posted August 16, 2022 Report Share Posted August 16, 2022 On 8/14/2022 at 10:27 AM, BrianJ said: Puzzled by that. Thought it was standard. Both mine have had it. Release footbrake on hill and car stays put until you pull away, “hold” lights on dash. But I accept different manufacturers call it different things. And I hate coasting, turn off stop/start to prevent it. OK, Agreed if you're on a hill and yes my BGTS does have hill hold but it definitely does not have brake hold on the flat. Quote Link to comment Share on other sites More sharing options...
JurassicBGTS Posted August 17, 2022 Report Share Posted August 17, 2022 My Wifes Mazda CX3 had a program on the on board computer screen which showed the mileage saved through stop start. Over about 6 months it was around 5 miles of fuel😥 Always turn mine off at the same time as turning on PSE. Great ergonomics by Porsche having the two buttons next to each other🤣 Quote Link to comment Share on other sites More sharing options...
JurassicBGTS Posted August 17, 2022 Report Share Posted August 17, 2022 (edited) 21 hours ago, GTSMarky said: OK, Agreed if you're on a hill and yes my BGTS does have hill hold but it definitely does not have brake hold on the flat. Has to be on a hill to operate. Edited August 17, 2022 by JurassicGTS 1 Quote Link to comment Share on other sites More sharing options...
GTSMarky Posted August 17, 2022 Report Share Posted August 17, 2022 1 hour ago, JurassicGTS said: Has to be on a hill to operate. Yep - agreed.. Quote Link to comment Share on other sites More sharing options...
GTSMarky Posted August 17, 2022 Report Share Posted August 17, 2022 ..I live in Cambridgeshire, hence it doesn't come on much!! 1 2 Quote Link to comment Share on other sites More sharing options...
½cwt Posted August 17, 2022 Report Share Posted August 17, 2022 5 hours ago, GTSMarky said: ..I live in Cambridgeshire, hence it doesn't come on much!! And you won't need the Auto Hold function so much either if you have PDK. 😉 Quote Link to comment Share on other sites More sharing options...
Stuart21UK Posted August 17, 2022 Report Share Posted August 17, 2022 4 minutes ago, ½cwt said: And you won't need the Auto Hold function so much either if you have PDK. 😉 you mean hill hold? I have that on my manual too Quote Link to comment Share on other sites More sharing options...
½cwt Posted August 17, 2022 Report Share Posted August 17, 2022 Just now, Stuart21UK said: you mean hill hold? I have that on my manual too No, Auto Hold. When you stop with a PDK/DSG you just press a bit more on the brake pedal and the car sits there brakes on, and engine off if appropriate conditions for the Start/Stop, then moves of when you apply power again, and even starts the engine when it detects that the car in front moves if the Start Stop has switch the engine off. Read second part of Richard Hamilton's post... Quote Link to comment Share on other sites More sharing options...
GTSMarky Posted August 17, 2022 Report Share Posted August 17, 2022 2 hours ago, ½cwt said: No, Auto Hold. When you stop with a PDK/DSG you just press a bit more on the brake pedal and the car sits there brakes on, and engine off if appropriate conditions for the Start/Stop, then moves of when you apply power again, and even starts the engine when it detects that the car in front moves if the Start Stop has switch the engine off. Read second part of Richard Hamilton's post... Not in a 981 it doesn't, only on a slope.. Quote Link to comment Share on other sites More sharing options...
GTSMarky Posted August 17, 2022 Report Share Posted August 17, 2022 2 hours ago, ½cwt said: And you won't need the Auto Hold function so much either if you have PDK. 😉 if it's flat then a pull on both paddles knocks it in neutral. Quote Link to comment Share on other sites More sharing options...
½cwt Posted August 17, 2022 Report Share Posted August 17, 2022 3 hours ago, GTSMarky said: Not in a 981 it doesn't, only on a slope.. Its a direct quote from the Porsche workshop manuals... Quote Link to comment Share on other sites More sharing options...
iborguk Posted August 17, 2022 Report Share Posted August 17, 2022 12 hours ago, GTSMarky said: ..I live in Cambridgeshire, hence it doesn't come on much!! Only on the slip roads then Quote Link to comment Share on other sites More sharing options...
andygo Posted August 18, 2022 Report Share Posted August 18, 2022 11 hours ago, ½cwt said: Its a direct quote from the Porsche workshop manuals... Bit of a thread hijack - do you have anything in your Porsche manual referring to battery voltages by any chance? 1 Quote Link to comment Share on other sites More sharing options...
½cwt Posted August 18, 2022 Report Share Posted August 18, 2022 4 hours ago, andygo said: Bit of a thread hijack - do you have anything in your Porsche manual referring to battery voltages by any chance? The Porsche manual info came from @Richard Hamilton, I just pointed out the source. Quote Link to comment Share on other sites More sharing options...
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