1,2 TDI clutch/ gearbox problems

Hello everyone!

I am new here, so I will firstly introduce myself. I am Jaro and since beginning of this year I became proud owner of Audi A2 1.2 Tdi.
In few months of ownership I had quite few struggles with the car. First I had to change the thermostat right after purchased. It turned out to be much more difficult operation than I expected. After I had problems with the gearbox and car left me stranded couple of times on the way.
Replacement of the hydraulic pump fixed the problem and car have driven without bigger problem for a few months.

However since yesterday I have another big problem and I would like to ask you guys for an opinion.
I am based in Netherlands where I can service the car easily since there is many mechanics specialized in this car.
Unfortunately I am on vacation in Slovakia at the moment and as far as I know there is no one familiar with 1.2 tdi around.

Here is the problem:

Yesterday I drove with the car just around 1 - 2 km and I parked. I noticed strange sound from engine bay but it was very cold, so I did not pay much attention to it. Then I started the car shortly after, drove few meters to the crossroad where I stopped and when I push the gas again to enter the road engine stopped. I started again, but car did not react to gas pedal anymore. I just pushed it out of the way (fortunately there was a parking lot right next to the road and car stayed there). After few times I could not start the engine anymore, only after disconnecting the battery.
What I find strange is when I start the car and put gearbox to D, car is trying to move a bit, but it cant ( it goes like 5 cm to to front or so..)
It does not react to gas pedal - RPM does not change at all.
When I put it to reverse car does not move but engine react to gas pedal ( RPMs)
When I change to manual gearshift it does not work either.
Only thing I could check myself on the parking lot was the level of hydraulic oil in the pump. It was quite full, but I added little bit so now its totally full. I do not think I have some leakage in the system since it was almost full, so hydraulic pump is not the problem this time.
Last few months gearbox hesitated few times when I selected Reverse. I had to do it multiple times and gearbox shifted to R.

Does anyone have any idea what could be the problem?

Clutch cylinder?
Clutch itself?
gear selector?

I would be grateful for any advice since there is no mechanic that can fix it around. I found one service with a lot or experience with automatic gearboxes, but I do not know if they can fix this and that service is more than 100 km away. If it is something with the clutch some local mechanic might be able to change parts here. It needs to be fixed in two weeks, than I go back to NL.

Thanks in advance for any answers,


Regards, Jaro
 
Last edited:
Hello everyone!

I am new here, so I will firstly introduce myself. I am Jaro and since beginning of this year I became proud owner of Audi A2 1.2 Tdi.
In few months of ownership I had quite few struggles with the car. First I had to change the thermostat right after purchased. It turned out to be much more difficult operation than I expected. After I had problems with the gearbox and car left me stranded couple of times on the way.
Replacement of the hydraulic pump fixed the problem and car have driven without bigger problem for a few months.

However since yesterday I have another big problem and I would like to ask you guys for an opinion.
I am based in Netherlands where I can service the car easily since there is many mechanics specialized in this car.
Unfortunately I am on vacation in Slovakia at the moment and as far as I know there is no one familiar with 1.2 tdi around.

Here is the problem:

Yesterday I drove with the car just around 1 - 2 km and I parked. I noticed strange sound from engine bay but it was very cold, so I did not pay much attention to it. Then I started the car shortly after, drove few meters to the crossroad where I stopped and when I push the gas again to enter the road engine stopped. I started again, but car did not react to gas pedal anymore. I just pushed it out of the way (fortunately there was a parking lot right next to the road and car stayed there). After few times I could not start the engine anymore, only after disconnecting the battery.
What I find strange is when I start the car and put gearbox to D, car is trying to move a bit, but it cant ( it goes like 5 cm to to front or so..)
It does not react to gas pedal - RPM does not change at all.
When I put it to reverse car does not move but engine react to gas pedal ( RPMs)
When I change to manual gearshift it does not work either.
Only thing I could check myself on the parking lot was the level of hydraulic oil in the pump. It was quite full, but I added little bit so now its totally full. I do not think I have some leakage in the system since it was almost full, so hydraulic pump is not the problem this time.
Last few months gearbox hesitated few times when I selected Reverse. I had to do it multiple times and gearbox shifted to R.

Does anyone have any idea what could be the problem?

Clutch cylinder?
Clutch itself?
gear selector?

I would be grateful for any advice since there is no mechanic that can fix it around. I found one service with a lot or experience with automatic gearboxes, but I do not know if they can fix this and that service is more than 100 km away. If it is something with the clutch some local mechanic might be able to change parts here. It needs to be fixed in two weeks, than I go back to NL.

Thanks in advance for any answers,


Regards, Jaro
Calling @RAB
 
Do you have access to VCDS? I assume that you haven't had the car for long. There is a 3L specialist in the Netherlands, or at least there was. You have a problem with the transmission but I don't have sufficient info. It could be something as simple as a failed accumulator. Can you make indicated and audible gear changes with the ignition on, engine not running and foot on brake pedal? You will VCDS to sort this out, or at access to it. With a 1.2Tdi, it will soon pay for itself!

RAB
 
Do you have access to VCDS? I assume that you haven't had the car for long. There is a 3L specialist in the Netherlands, or at least there was. You have a problem with the transmission but I don't have sufficient info. It could be something as simple as a failed accumulator. Can you make indicated and audible gear changes with the ignition on, engine not running and foot on brake pedal? You will VCDS to sort this out, or at access to it. With a 1.2Tdi, it will soon pay for itself!

RAB
No, I do not have VCDS.I have diagnostic tool, but it's universal and I do not have it by me.
I live in Netherland, but I am in Slovakia at the moment. I will try to find someone with VCDS.

I have tried now and I can in fact hear gear changes when the engine is off. Also I can change to manual and shift all gears.

Before my way to Slovakia I found out there was a washer fluid spill in my trunk and it went through to the battery compartment. One screw which holds cable by battery pole was dirty and bit rusty. I cleaned it with the rug, but did not disconnect it. Do you think it could be cause of the problem? I did around 1600 km after I discovered that spill and problem started just yesterday.
 
Disconnect both battery connections and clean with wire wool; that might help. I meant changing gear in manual (tiptronic) mode. Your diagnostic tool probably won't help. Do you know when a transmission basic setting was last done?

This is the 1.2Tdi specialist in the Netherlands:


RAB
 
Disconnect both battery connections and clean with wire wool; that might help. I meant changing gear in manual (tiptronic) mode. Your diagnostic tool probably won't help. Do you know when a transmission basic setting was last done?

This is the 1.2Tdi specialist in the Netherlands:


RAB
Hi,
So I cleaned both battery connections but it did not help.
Also I cannot start the car on S, but it starts on N.
I can change gears in manual mode while engine is off.
Transmission basic settings has been done around 20K km ago.
I am on vacation, so the car is 1500 km away from Netherlands.

What could be good hint to find the problem I guess, is that the car does not react to gas pedal in D mode,
but it does on Neutral and Reverse. Anyway, I would try to find someone here with VCDS diagnostic tool.

Jaro
 
That the car starts in N and not S strongly suggests that you have a problem with the potentiometer in the clutch actuator. Normally in that state, you can drive the car but it is a warning that it has failed or is failing. Best option (but probably not at present) would be to remove the electrical part of the actuator and send it to Malmank on the German forum (a2-freun.de). He will replace the potentiometer with a Hall Effect sensor, which is a non-wearing part and cheaper than a new actuator. New actuators may only be available from Audi Tradition now and not until the New Year. If you remove/replace the clutch actuator, you will need to do a basic setting with VCDS. Good luck!

RAB
 
  • Like
Reactions: Ami
Yes, that's the part. I'd be wary of buying a used one, as it might have the same problem as your's. The part is external, so clutch does not need to be removed. You should be able to do the job yourself. You will need VCDS though.

RAB
 
Thank you for taking the time even during christmas.
Last few days has been quite cold ( around -5) and today I tried to start the car again.
It does not change the gears anymore. Also not with engine turned of and in multitronic ???
It stayed in first gear, so I cannot start it either. I am losing my patience with this car.
 
I do not have voltage meter. But starter is rolling and battery is less than one year old.
I arranged someone with VCDS diagnostic for tomorrow, so I will know error codes.
 
Is it possible that water has entered the hydraulic oil reservoir? The cap is immediately below the drain connection from the plastic moulding over the wipers at the base of the windscreen. There is a breather hole in the green cap of the reservoir; if the drain connection is dis-connected, water can fall onto the reservoir and be drawn into the reservoir when the car is running. The reservoir will then contain emulsified hydraulic oil which will probably freeze at -5degC.

RAB
 
Is it possible that water has entered the hydraulic oil reservoir? The cap is immediately below the drain connection from the plastic moulding over the wipers at the base of the windscreen. There is a breather hole in the green cap of the reservoir; if the drain connection is dis-connected, water can fall onto the reservoir and be drawn into the reservoir when the car is running. The reservoir will then contain emulsified hydraulic oil which will probably freeze at -5degC.

RAB
I don't think there is a water in the reservoir.
I still did not do a diagnostic. Most of the mechanics are free untill the New year.
However I checked the battery voltage and it is 12.3 - 12.4. Is it enough? Battery is less than one year old from Bosh.
 
Is your hydraulic pump working? Can you hear it? Without the required pressure, nothing will operate, including the engine. If not, try disconnecting electrically and re-connecting.

RAB
 
Is your hydraulic pump working? Can you hear it? Without the required pressure, nothing will operate, including the engine. If not, try disconnecting electrically and re-connecting.

RAB
Yes hydraulic pump is working. I can hear it when I open the door. I filled up hydraulic oil as well, so it should be sufficient.It makes two gear shifts and than it pumps again.
I disconnected battery many times - engine starts in S mode sometimes afterwards. I had it diagnosed today with two diagnostic tools ( not VCDS) and only code that came out was 17911. It didn't come back after we removed it. I guess that clutch actuator could be the problem. Car is starting to move in S, but it can't. What error code would I get if it is actuator?
 
00263 probably. It could also be the clutch guide sleeve/clutch bearing assembly. A faulty actuator usually gives some warning of failure, 5-10k km.

RAB
 
Two gear shifts before the pump re-starts is really not satisfactory. You need at least three, preferably more. Too few and you risk damaging the gearbox. That means a new accumulator.

17911 is a faulty alternator. It may be an old fault that's not relevant.

RAB
 
Two gear shifts before the pump re-starts is really not satisfactory. You need at least three, preferably more. Too few and you risk damaging the gearbox. That means a new accumulator.

17911 is a faulty alternator. It may be an old fault that's not relevant.

RAB
Hi. Yes I know two gear changes is not enough. I am planning to change that accumulator for some time.
Car was towed to the garage yesterday.
Will see if they can figure out what is wrong, but they do not have experience with this system.
It was only garage that was willing to give it a try. Fingers crossed :)
 
Back
Top