MK7.5 2018 SE NAV DSG coasting problems - random occurences

Vwvwvwvw9

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[FONT=&quot]VW have issued a software update. I have had it applied. It is going to be distributed as some sort of technical bulletin to all dealers soon. But it is available if they ask Vw technical or Vw Germany. [/FONT]

[FONT=&quot]I will advise if fixed or not but won’t know as mine was intermittent. Sometimes weeks without any errors.[/FONT]
 

retiredbri

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Hi all.
I'm new to this forum and need some advice please.
I have a Golf Match 1.5 TSI EVO 130PS 7-speed DSG 5 Door that has the extra battery under the passenger seat and that has the "Coast Feature" where the engine actually switches OFF.
Could someone please let me know if the Golf Match 1.5 TSI EVO 150PS 7-speed DSG 5 Door has Coast Feature AND does the engine switch off? If it is anything like a friend's Skoda Octavia, it can Coast but it only disengages the two gearboxes from the engine but the engine continues to run at idle speed.
Thanks in advance
retiredbri
 

Keithuk

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First posts normally go in introductions else you could get a free fix and we never see you again!!!

What year Golf Match 1.5 TSI EVO 130PS

Manufacturer: VW, Date(s) Used: 07/2017-07/2019, Model: Golf/Variant/4Motion/R32, Engine Code: DACA, 96Kw, 130PS, 1.5 Ltr, 4 Cyls, Remarks: Turbocharged Stratified Injection (TSI)

Read the handbook?
 

retiredbri

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First posts normally go in introductions else you could get a free fix and we never see you again!!!


Manufacturer: VW, Date(s) Used: 07/2017-07/2019, Model: Golf/Variant/4Motion/R32, Engine Code: DACA, 96Kw, 130PS, 1.5 Ltr, 4 Cyls, Remarks: Turbocharged Stratified Injection (TSI)

Read the handbook?

Oops sorry, just back from a relaxing holiday - maybe too relaxing

The Golf Match 1.5 TSI EVO 130PS is late August 2019.

The handbook I have is for the 130PS DSG. I'm having problems with the engine & EMU going into Coast Mode with the engine stopped and not wanting to come out. Fatal on a steep hill when I want engine braking. If the 150PS didn't have this feature then my wife and myself (both in our mid 70's) could approach the dealer to change to the 150PS because we were not told of the engine stopping and only had a test drive in the 150PS that the dealer said was the same as the 130PS.
Hope you can help
regards Retiredbri
 
Last edited:

Vwvwvwvw9

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Hi all.
I'm new to this forum and need some advice please.
I have a Golf Match 1.5 TSI EVO 130PS 7-speed DSG 5 Door that has the extra battery under the passenger seat and that has the "Coast Feature" where the engine actually switches OFF.
Could someone please let me know if the Golf Match 1.5 TSI EVO 150PS 7-speed DSG 5 Door has Coast Feature AND does the engine switch off? If it is anything like a friend's Skoda Octavia, it can Coast but it only disengages the two gearboxes from the engine but the engine continues to run at idle speed.
Thanks in advance
retiredbri


I can only go by what I’ve been told in dealership.......

But it sounds like you are correct. The 150 coasts but the engine keeps on running (either at idle or less cylinders). But does not switch off. This only occurs when in eco mode so it won’t even coast in normal driving mode.

The 150 doesn’t have the battery under seat so needs the engine to be running to power accessories.
 
Last edited:

retiredbri

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I can only go by what I’ve been told in dealership.......

But it sounds like you are correct. The 150 coasts but the engine keeps on running (either at idle or less cylinders). But does not switch off. This only occurs when in eco mode so it won’t even coast in normal driving mode.

The 150 doesn’t have the battery under seat so needs the engine to be running to power accessories.

Thanks.
The 150 PS sounds just like the Skoda Octavia 1.4TSI DSG we used to have. The 130PS coasts with the engine off in both Eco AND Drive mode. You can't stop it except by going into Sports mode.

We need to see the dealer and quick.

regards retiredbri
 

Vwvwvwvw9

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Oops sorry, just back from a relaxing holiday - maybe too relaxing

The Golf Match 1.5 TSI EVO 130PS is late August 2019.

The handbook I have is for the 130PS DSG. I'm having problems with the engine & EMU going into Coast Mode with the engine stopped and not wanting to come out. Fatal on a steep hill when I want engine braking. If the 150PS didn't have this feature then my wife and myself (both in our mid 70's) could approach the dealer to change to the 150PS because we were not told of the engine stopping and only had a test drive in the 150PS that the dealer said was the same as the 130PS.
Hope you can help
regards Retiredbri


There was a service bulletin and software update issued about a week or two ago which stops any error messages appearing and couple other changes.

Its designed to coast like like you say. If that’s a problem on steep hills then just put it into manual. Many automatics you need to do this to stop it racing away.

Another way way to stop the engine going off is to use braking. A small amount of braking won’t cause engine to come on but a medium to heavy brake causes engine to start. I really do not have a problem even on a very steep long hill. It’s just the way many automatics work and just something to be aware of.
 

retiredbri

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There was a service bulletin and software update issued about a week or two ago which stops any error messages appearing and couple other changes.

Its designed to coast like like you say. If that’s a problem on steep hills then just put it into manual. Many automatics you need to do this to stop it racing away.

Another way way to stop the engine going off is to use braking. A small amount of braking won’t cause engine to come on but a medium to heavy brake causes engine to start. I really do not have a problem even on a very steep long hill. It’s just the way many automatics work and just something to be aware of.

I can't dispute what you say BUT we were told that the 130PS DSG was exactly the same as the 150PS DSG except for having 20PS less. We wanted a VW that did what the old 2014 Skoda Octavia 1.4L TSI DSG did.
We have been driving since 1964. Our old 2014 Skoda Octavia had done and 67,000 miles in 5 years average 57mpg and was still on the ORIGINAL pads and discs. We hardly ever touched the brakes!
My wife will NEVER use Cruise Control because she always wants to be in control. She is no slouch and frequently made 175 mile journeys to see her sister travelling on B, A roads and the M5, M42, M40, M25 and M11 ON HER OWN.
Imagine her shock when the Golf 130PS when in Drive mode decided to stay in coast mode on a steep hill. She had never had to use manual before and just kept the Skoda in Drive mode applying the brakes gently to keep the DSG is D3 or D4?
We had a lot of vehicles behind us and applying "medium to heavy brakes" would have caused a shunt. Her confidence has been shattered and she refuses to drive it!
The dealer has said the 130PS "is designed to Coast with the Engine Off in ECO and Drive mode"

Hence my opening post "can someone please help"
regards retiredbri
 
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Stevie79

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Feb 21, 2021
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My new 2018 Bluemotion has new technology introduced so that when the car coasts, the engine turns off completely. I believe the car uses the secondary battery to control brakes and steering.

The first issue experienced is that during a drive the car will suddenly not go into coasting at all. The only way I found to recover this situation is to switch off the ignition and back on again. This behavior has happened twice in 700 miles. Normally the car will coast (engine cuts out) whenever you take you foot of the accelerator.

The other random type fail I have seen is with ACC activated. When going downhill the car will again coast (different behavior to the mk7). Normally the car uses brakes to maintain the set speed. However once the brakes were not applied and the car just kept gaining speed. Manually touching the brake brought the system back to life and all was ok.

The car has been to the dealership where they looked at fault logs - there were some Battery stabilization faults and a databus error amongst others. Initially (2 weeks ago) they suspected the secondary battery was the problem, then last week they were saying one of the faults indicated a comms failure to one of the ECUs. They checked the wiring and that was ok. Then they were going to check with VW factory to determine what and where the ECU was to check that out.

Yesterday the dealership got back to me and stated that my car was performing as expected which I find hard to believe

Whilst these faults are not life threatening the random nature concerns me and I am wanting a full explanation from the dealership as to why they think this behavior is ok.

I would like to know if any other new 2018 Bluemotion owners have seen similar problems with coasting functions or if you are happy and never experienced such things. This car is a new model and has a blue stripe along the bottom of the radiator grill.

Also what would you guys do in this situation. Would you put up with it or demand that it be fixed. It worries me that if there are comms problems some other more safety critical error could occur.

There are other subtle changes to the coasting functions on this car (at lease my one) that are different to my MK7 and even a 2018 GT model that I am driving as a courtesy car. If any owners have had both versions of the car and notice any changes I would be pleased to hear about them. I will document these anyway in another thread.
Hi there ive just got vw golf bluemotion 1.5 tsi had it couple months now but just realised annoying things like ive disabled start/stop now most times but when decelerating off pedal and pressing again its like engine starting noise alot whilst driving, as if its in auto start stop mode and completely stopped at lights etc anyone got ideas??
 

Stevie79

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Feb 21, 2021
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Hi there ive just got vw golf bluemotion 1.5 tsi had it couple months now but just realised annoying things like ive disabled start/stop now most times but when decelerating off pedal and pressing again its like engine starting noise alot whilst driving, as if its in auto start stop mode and completely stopped at lights etc anyone got ideas??
 
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