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How do you use start stop feature?
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43 posts in this topic

Hi Yes most of above is correct but ours works long before normal running temperature  is achieved Now question was how do you use stop start with same turned on ( switch on dash right hand side ) when driving and you stop  say at junction        YOU THEN PUT FOOT ON BRAKE GEAR TO NEUTRAL AND FOOT OFF CLUTCH             failing to do         ALL        the above engine will keep running I think , this is not a fault  but just how it works    🤔    hope this helps 🙃

 

JC. 😎  ☕️  🥃

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Mine works very occasionally too. I have investigated possible reasons with ODB2 and Torque and it seems that main reason of failure is battery charging level. It have to be at least 80% full to start-stop working ("Bat Min chg." on the screenshot).  Battery of my car usually is in range 69-75% ("Bat Charge"). Even after 2 hour highway driving!!! Only after charging with external charger start-stop works for couple of days and then stops again.

I thought that it only problem of my car, but now reading posts in this thread it seems like it's the common problem with Kadjar. I don't know is it weak actuator, faulty voltage/current sensors or car's "brain" itself, but anyway - welcome to the club :)

  

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Not sure if it works the same in a manual but in my auto you have to use a certain amount of force on the brake pedal before it operates. So if you just hold it gently it won't operate until you increase foot pressure.  It is very good in the petrol auto...fast to start up again and much less start up noise, fuss and jerking than with other cars I've driven that have the feature.

 

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Yes, it definitely  (electrical) engineering fault in Kadjar.  I stopped using start-stop because its benefits are doubtful.  We can maybe  save small amount of pollution, but lose in battery and starter lifetime.

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If you press the brake pedal hard after stopping at the red traffic light, and when it changes to green you can release the pressure a little bit on the pedal and the engine will start an be ready when the road is clear a few seconds later. Otherwise I think the start stop is too slow in action expecially with an automatic transmission, it does not start when the gas pedal is pressed and when it finally starts the car jumps away. That is very irritating and I usually shut it off in moderate traffic. In endless ques whith most of the time standing still, it may have a purpose though.

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56 minutes ago, turboted10 said:

You don't have to press the pedal hard, just enough to operate the pedal switch. It's only slightly harder than resting your foot on the pedal but the manual bigs this up more than it should.

I can stamp on the brake then tickle it with a feather, still doesn't work.

Yes, it does, but if you would like to start the engine still with the brakes applied, the initial pressure on the brake pedal must be higher so the brakes are not released when you lift the foot ever so slightly.

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3 hours ago, turboted10 said:

You don't have to press the pedal hard,

If you see this symbol, then press was hard enough for start-stop, but it blocked for some reason (for me usually battery low charging level).

.5a53a24db6a63_2018-01-08(1).png.3c160d84548b7505ac277430957c9086.png

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You'd better take a visit to your dealers. It's not a design fault cause mine works flowlessly. Always. Every time. No hard pushes or something. Just a regular stop.

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1 hour ago, AOne said:

You'd better take a visit to your dealer

Already did. They resume:

1) I have too short trips and battery constantly discharge. Thus I have to periodically charge it with external charger.

2) CLIP diagnostic didn't show any errors and battery test was OK.

3) Stupid consumer and dealer always smart :)

I don't know how to exactly determine "short trip". I have usually 2 times per week 2x50km trips and rest of weekdays a little bit shorter ones (10-15km). 

I'm going to do own independent tests by Renault official instructions. Like this:

Checking the current delivered by the alternator

Engine running.
Warm engine.
All consumers switched off.
Put a current clamp on the connection

In which range is the current delivered by the alternator?
Less than 5 A
Replace the alternator.

Between 5 A and 35 A
Go on to the next step. >>>>>>>

Greater than 35 A
Check that there are no electrical components consuming an abnormal amount of current.
Disconnect the fuses one by one.
Comparing the current delivered by the alternator with
and without electrical consumers switched on

Engine running.
Warm engine.
Put a current clamp on the connection
Switch on all of the consumers (main beam headlights, de-icing,
passenger compartment ventilation),then record the "I2" current
delivered by the alternator.

Switch off all of the consumers, then record the "I1" current
delivered by the alternator.

Compare the two values measured.

What is the obtained result?
"I2" greater than "I1 + 5 A"
Go on to the next step. >>>>>>>

"I2" less than "I1 + 5 A"
Replace the alternator.

 

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Hi Not sure if you call it a DESIGN PROBLEM when some or even most work fine, seems to me you have a faulty component which is quite different to a design fault, now all you have to do is convince your dealer to find said component hope it works out and you get it sorted.  👍

JC😎😎🥃🥃

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1 hour ago, J C said:

Hi Not sure if you call it a DESIGN PROBLEM when some or even most work fine, seems to me you have a faulty component which is quite different to a design fault, now all you have to do is convince your dealer to find said component hope it works out and you get it sorted.  👍

JC😎😎🥃🥃

Exactly :)

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33 minutes ago, turboted10 said:

It's just 1 of those problems that's not worth wasting time and travel over, life's too short and all that.

The real issue is that if you collect enough of these minor points, the chance of ever opting for another Renault diminishes rapidly.

Well, I drive renaults for more then 6 years and I'm pretty pleased with the cars. Best value for money. There's also no guarantee if you switch to VW for example, it would be perfect in every aspect, beside the cost is a big difference. There are also faulty  details. I have absolutely no complains bout the car for 20K km and 6 months. Even the R-link works perfect. What's irritating me is only the Nissan inherited thing like the windows controls and car locking. The interior is also very "plastic" and cheap, but everything else is good enough. The fact that so many people from over Europe find this forum first to complain bout troubles they have, doesn't mean the car is crap in general :)

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7 hours ago, Arthur_Kono said:

After battery and one connector (I don't know exactly which) replacement by warranty I don't have any start/stop issues anymore.

Good to hear you're all good already :) So, this appeared to be faulty equipment, not design fault ;)

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I think the stop/start feature is bad news. Why? Because it puts extra load on the battery and more importantly, wear on the starter motor. I always disable it when I start the engine.  Sadly, unlike Fiat and some other makes it can't be disabled as a default setting.

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7 hours ago, turboted10 said:

But the Kadjar and Qashgai have both a super strong battery and a modified starter on start/stop models, price them at the parts shop to see

All the more reason for both to last even longer if the stop/start function is disabled.  Sorry, but I hate the stop/start function. Not to mention the slight delay on pulling away when the function turned on.

Also, any fuel saved while waiting at traffice lights is probably lost by the additional fuel used on the restart.

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3 hours ago, turboted10 said:

It's been proven that it saves fuel, no extra revs are given so the maths are simple. Now, given that, and this is a guess, most folks here have bought new cars with a 4 year warranty and probably won't keep them that long, failure isn't even a consideration.

I've done this with every car that I've owed over the last 40 odd years, turn off every time I think I'm going to be stood for more than a few moments, never been caught out yet. My view is if the starter or the battery is on the way out it's gonna go anyway.

That tight on fuel and not even a Yorkshireman.;)

Sorry, but I still hate the function. (and I've owned cars for 55 years!  :lol:)

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Use it all day if I could for me, having an auto foot on brake stop ending foot off brake engine start in the 0.3 of a second moving your foot it’s started.

i do however try not to sit in my seats as this creates wear on the material and i wouldn’t want to wear it out😂😂👍

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6 hours ago, darenh said:

Use it all day if I could for me, having an auto foot on brake stop ending foot off brake engine start in the 0.3 of a second moving your foot it’s started.

i do however try not to sit in my seats as this creates wear on the material and i wouldn’t want to wear it out😂😂👍

Glad to hear it :). But perhaps if you had leather seats like on my Kadjar you would not worry :(about potential seat wear.  :lol:

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