POLO TSI 1.0 2019 start stop not working

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tm123
New Member

Posts: 3

POLO TSI 1.0 2019 start stop not working Jun 29, 2020 19:30:26 GMT

Quote

Post by tm123 on Jun 29, 2020 19:30:26 GMT

Hello, I have a new Polo 2019 and the start/stop system is working only after long trips.

Searching some live data I found the following:

1. Number of prevented stop processes

Possible service life to short: 1791

Battery charge condition to low: 1985

Any idea what is this Possible service life to short?

2. With the engine ON at idle I have the following readings:

Battery voltage: 14V

Battery current: 3.2A

Generator current: 25.1A

EM_electrical_system_current: 21.9A

Measuring the generator current with a clamp meter I see much lower current

than the current from the OBD live data ~15A and the same also with the

EM_electrical_system_current.

On the other hand the negative terminal current is matching the OBD Battery current.

Is this normal for the EM_electrical_system_current to be so high at idle (without having

any loads on eg. headlights, climate, etc)?

3. On the cars start/stop system status display I get the following message:

Vehicle power consumption is high

after having the vehicle engine ON for a while and the start/stop is not working.

4. With the ignition ON the battery current is ~5A

5. The battery charge condition is at 62%

6. The start/stop starting voltage prediction shows

that the power consumption during idle phase is 25A

Is this value normal?

7. I have measured the battery current after I have locked the car, and the current draw is less than 50mA.

Any ideas what could be the problem.

I have already went the car to the official service. They checked the car and they told me

that they cannot find anything wrong with the car except that the battery was not fully charged.

They charged the battery, the start/stop worked for 1 week and now I see the same problem again.

Any ideas would be appreciated.

Many thanks

carbonchaos
Full Member

Posts: 116

POLO TSI 1.0 2019 start stop not working Jul 2, 2020 19:57:48 GMT

Quote

Post by carbonchaos on Jul 2, 2020 19:57:48 GMT

The battery charge condition is too low ,this is why stop/ start is inop and only worked after the battery was fully charged.

This is a very common complaint with customers who only do short trips with high electrical demand,as you stated the vehicle is telling you consumption is too high for Stop/start.

The vehicle is trying to recharge the depleted battery capacity I believe.

faulty battery?

2016 Vw Polo Gti 3dr Dsg oryx white
2007 Vw polo 9n3 1.4 SE (daily).

tm123
New Member

Posts: 3

POLO TSI 1.0 2019 start stop not working Jul 9, 2020 19:08:01 GMT

Quote

Post by tm123 on Jul 9, 2020 19:08:01 GMT

Many thanks for your answer.
I can understand that if the car is not making long trips will not fully charge the battery, and the start/stop will not work.
But this issue exist also after 2h long trips. Start/stop will work at the end of the trip for 2-3 times. And the next day will not work again.

Today the start/stop didn't work also.
Here are the captured data from the tracker showing the battery voltage:

timestamp timestamp position.valid position.speed movement.status external.powersource.voltage
9/7/2020 0:30:11 TRUE FALSE 12.643
9/7/2020 1:30:11 TRUE FALSE 12.619
9/7/2020 2:30:11 TRUE FALSE 12.611
9/7/2020 3:30:11 TRUE FALSE 12.609
9/7/2020 4:30:11 TRUE FALSE 12.6
9/7/2020 5:30:11 TRUE FALSE 12.582
9/7/2020 6:30:11 TRUE FALSE 12.585
9/7/2020 7:30:11 TRUE FALSE 12.575
9/7/2020 8:30:11 TRUE FALSE 12.572
9/7/2020 9:29:35 TRUE FALSE 13.408
9/7/2020 9:30:19 TRUE 27 FALSE 14.587
9/7/2020 9:30:20 TRUE 27 TRUE 14.584
9/7/2020 9:30:28 TRUE 30 TRUE 14.548
9/7/2020 9:30:29 TRUE 27 TRUE 14.56
9/7/2020 9:30:31 TRUE 16 TRUE 14.582
9/7/2020 9:30:34 TRUE 26 TRUE 14.596
9/7/2020 9:30:41 TRUE 15 TRUE 14.574
9/7/2020 9:30:42 TRUE 10 TRUE 14.568
9/7/2020 9:30:44 TRUE 10 TRUE 14.594
9/7/2020 9:30:45 TRUE 11 TRUE 14.604
9/7/2020 9:30:46 TRUE 18 TRUE 14.595
9/7/2020 9:30:50 TRUE 8 TRUE 14.566
9/7/2020 9:30:55 TRUE 10 TRUE 14.59
9/7/2020 9:30:56 TRUE 13 TRUE 14.599
9/7/2020 9:30:57 TRUE 19 TRUE 14.604
9/7/2020 9:31:03 TRUE 30 TRUE 14.582
9/7/2020 9:31:07 TRUE 18 TRUE 14.524
9/7/2020 9:31:08 TRUE 12 TRUE 14.544
9/7/2020 9:31:09 TRUE 13 TRUE 14.562
9/7/2020 9:31:10 TRUE 16 TRUE 14.584
9/7/2020 9:31:11 TRUE 19 TRUE 14.603
9/7/2020 9:31:14 TRUE 29 TRUE 14.581
9/7/2020 9:31:17 TRUE 17 TRUE 14.574
9/7/2020 9:31:19 TRUE 6 TRUE 14.592
9/7/2020 9:31:20 TRUE 9 TRUE 14.59
9/7/2020 9:31:21 TRUE 15 TRUE 14.59
9/7/2020 9:31:23 TRUE 26 TRUE 14.596
9/7/2020 9:31:29 TRUE 13 TRUE 14.576
9/7/2020 9:31:31 TRUE 10 TRUE 14.605
9/7/2020 9:31:32 TRUE 12 TRUE 14.588
9/7/2020 9:31:35 TRUE 25 TRUE 14.58
9/7/2020 9:31:38 TRUE 11 TRUE 14.607
9/7/2020 9:31:42 TRUE 24 TRUE 14.600.999
9/7/2020 9:31:52 TRUE 12 TRUE 14.4
9/7/2020 9:31:54 TRUE 6 TRUE 14.513
9/7/2020 9:31:55 TRUE 15 TRUE 14.55
9/7/2020 9:31:57 TRUE 26 TRUE 14.6
9/7/2020 9:32:06 TRUE 16 TRUE 14.558
9/7/2020 9:32:07 TRUE 13 TRUE 14.503
9/7/2020 9:32:08 TRUE 10 TRUE 14.449
9/7/2020 9:32:10 TRUE 12 TRUE 14.463
9/7/2020 9:32:12 TRUE 22 TRUE 14.619
9/7/2020 9:32:17 TRUE 8 TRUE 14.567
9/7/2020 9:32:20 TRUE 23 TRUE 14.544
9/7/2020 9:32:24 TRUE 9 TRUE 14.569
9/7/2020 9:32:25 TRUE 8 TRUE 14.543
9/7/2020 9:32:26 TRUE 9 TRUE 14.545
9/7/2020 9:32:27 TRUE 10 TRUE 14.547
9/7/2020 9:32:28 TRUE 14 TRUE 14.604
9/7/2020 9:32:29 TRUE 18 TRUE 14.607
9/7/2020 9:36:21 TRUE FALSE 14.646
9/7/2020 9:37:57 TRUE FALSE 13.14
9/7/2020 9:38:13 TRUE FALSE 13.581
9/7/2020 9:38:18 TRUE FALSE 12.835
9/7/2020 10:38:18 TRUE FALSE 12.706
9/7/2020 11:38:18 TRUE FALSE 12.66
9/7/2020 12:38:18 TRUE FALSE 12.634
9/7/2020 13:38:18 TRUE FALSE 12.618
9/7/2020 14:38:18 TRUE FALSE 12.615
9/7/2020 15:38:18 TRUE FALSE 12.615
9/7/2020 16:38:18 TRUE FALSE 12.607
9/7/2020 17:38:18 TRUE FALSE 12.609
9/7/2020 18:38:18 TRUE FALSE 12.608

tm123
New Member

Posts: 3

POLO TSI 1.0 2019 start stop not working Jul 9, 2020 19:18:08 GMT

Quote

Post by tm123 on Jul 9, 2020 19:18:08 GMT

And this is after a 200Km trip at 04/07/2020.
The battery voltage drop (without any vehicle movement) at 05/07/2020 was:

05/07/2020 00:01:58 true false 12.838
05/07/2020 01:01:58 true false 12.815
05/07/2020 02:01:58 true false 12.794
05/07/2020 03:01:58 true false 12.785
05/07/2020 04:01:58 true false 12.752
05/07/2020 05:01:58 true false 12.746
05/07/2020 06:01:58 true false 12.735
05/07/2020 07:01:58 true false 12.731
05/07/2020 08:01:58 true false 12.702
05/07/2020 09:01:58 true false 12.696
05/07/2020 10:01:58 true false 12.698
05/07/2020 11:01:58 true false 12.689
05/07/2020 12:01:58 true false 12.681
05/07/2020 13:01:58 true false 12.676
05/07/2020 14:01:58 true false 12.663
05/07/2020 15:00:11 true false 12.665
05/07/2020 16:00:11 true false 12.657
05/07/2020 17:00:11 true false 12.656
05/07/2020 18:00:11 true false 12.659
05/07/2020 19:00:11 true false 12.649
05/07/2020 20:00:11 true false 12.652
05/07/2020 21:00:11 true false 12.651
05/07/2020 22:00:11 true false 12.646
05/07/2020 23:00:11 true false 12.636

At 06/07/2020 the start/stop was working.

Last Edit: Jul 9, 2020 19:19:23 GMT by tm123

carbonchaos
Full Member

Posts: 116

POLO TSI 1.0 2019 start stop not working Jul 9, 2020 20:01:57 GMT

Quote

Post by carbonchaos on Jul 9, 2020 20:01:57 GMT

Battery charge voltage is different to a battery’s capacity to start a vehicle.

lets say you have a bad cell in a battery but you have 14v charging it for 2 hours the battery will not be able to ‘ hold’ that charge to start the vehicle again.

You need to test the amps in the battery ( state-of-charge )after it’s been at rest ,say over night to Eliminate that first.

Last Edit: Jul 9, 2020 20:05:30 GMT by carbonchaos

2016 Vw Polo Gti 3dr Dsg oryx white
2007 Vw polo 9n3 1.4 SE (daily).

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