Volvo V40 Forums banner
1 - 4 of 4 Posts

·
Registered
Joined
·
2 Posts
Discussion Starter · #1 ·
Hello guys,

I am new here. I hope we can have a very nice collaboration. Also, English is my second language, so be gentle.

I am experiencing an odd behaviour from time to time on my V40 MY13 D3's automatic gearbox.

The problem is that when the gearbox is downshifting, the action just decelerate the car in a very noticeable way. Some time the transition is smooth, sometimes I just brake in short humps.
The deceleration is not linear, according to the brake force I apply, but it gets stronger with every downshift. Which just frustrates me and it affects my comfort in driving.

Also the engine gets pretty loud and it feels like I am pulling another car.

The gearbox has been maintained 15k km ago, and this behaviour just appears from time to time.
I also performed a check at the Volvo service and everything is okay. After the sw reset it got better for a day or two.

Has anyone experienced this so far?
Do you have any idea?
 

·
Registered
Joined
·
82 Posts
What do you mean by SW reset? Has the ATF fluid counter been reset after the gearbox service and did they perform an adaptation of the shifts? Who did the gearbox service?

I had similar problems with mine, did a gearbox fluid flush and re-adaptation of the gearbox software at an official volvo dealer and since then things are pretty fine again. This was around 40000 km and 2 years ago. The ATF was black and smelled ugly before the job was done. A few weeks ago during the annual service, I asked for a small sample of the ATF, it's not red anymore, more brown-ish. They say it's still ok but I'm experiencing a slight decrease in shifting quality and I'm thinking about doing a second flush.. if only it wasn't so expensive.. (over 500 Euros here in germany).

All in all: harsh downshifts are not acceptable 15k km after a ATF flush with counter reset if it has been done properly. Either the flush has been done poorly and there is some residue still in the gearbox which is causing the problems with the shifting solenoids, or it's something like "new ATF but the electronics still think it's the old fluid" which causes poor shifting.
 

·
Registered
Joined
·
2 Posts
Discussion Starter · #3 ·
What do you mean by SW reset? Has the ATF fluid counter been reset after the gearbox service and did they perform an adaptation of the shifts? Who did the gearbox service?

I had similar problems with mine, did a gearbox fluid flush and re-adaptation of the gearbox software at an official volvo dealer and since then things are pretty fine again. This was around 40000 km and 2 years ago. The ATF was black and smelled ugly before the job was done. A few weeks ago during the annual service, I asked for a small sample of the ATF, it's not red anymore, more brown-ish. They say it's still ok but I'm experiencing a slight decrease in shifting quality and I'm thinking about doing a second flush.. if only it wasn't so expensive.. (over 500 Euros here in germany).

All in all: harsh downshifts are not acceptable 15k km after a ATF flush with counter reset if it has been done properly. Either the flush has been done poorly and there is some residue still in the gearbox which is causing the problems with the shifting solenoids, or it's something like "new ATF but the electronics still think it's the old fluid" which causes poor shifting.
Thanks a lot for replying.

This was the exact saying of the guy from the official Volvo dealer repair shop. He said that he performed a SW reset (I am guessing maybe parameters reset or similar) and a re-adaptation.
The gearbox service was done by a certified Volvo service, specialised only for Volvo, with fluid flush and adaptation. I am honestly don't know if they reset also the milage counter for the gearbox.
I hope so. They are pretty known for the quality of their work, but things can happen, of course.

Worst case, I will go back to the Volvo dealer and ask for a flush and adaptation and maybe some connectors cleaning. Before the periodic fluash, the shifting was pretty smooth and I miss that.
 

·
Registered
Joined
·
82 Posts
Maybe another SW reset will do the job, because the oil should not be bad after 15k km. I had very similar issues, even after the transmission flush. First, the guy from the volvo dealer said it is normal that shifting behaviour is not optimal for a couple 100 km, but when I had 600+ on the clock, I went back and asked for a fix. They did another complete SW reset and adaptation and since then I had almost no issues whatsoever. Now after 50000 km, the shifting quality is getting slightly bad again and the oil is in medium condition, but I think I can wait until the next service, because the job is so bloody expensive..
So in your shoes I would do the same and kindly ask for a free second SW reset and adaption to cure the issues.
BTW, "connectors cleaning" is not an easy job at all. The gearbox is sealed and not too easy to access. To reach and overhaul the valve body (which is most likely the cause for random bad shifting quality) is a very expensive repair and should be the ultimate measure only. If you go to the dealer, also ask them for a small sample of the ATF fluid to see it's colour and if you can find metal or clutch material residue inside. Both should not be there in significant amounts 15000 after a proper flush..
 
1 - 4 of 4 Posts
Top