Joined
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13 Posts
Hi everyone can anyone help I have stronic in a b8 2010 I have a fault code p176d00 actuator 4 not adjusting it was working spot on and now no reverse or 2nd gear
Audi A5 B8 Stronic fault
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I see you're having the 0b5 issues too pal. Do you get the warning message on the dash saying "gearbox malfunction" and it going into limp mode? Any other symptoms like grinding as it tries to select gears?
The reason for no 2nd or reverse is because they are on the same selector controlled by the lowest solenoid on the mechatronics unit I believe. As you may find through Google this mechatronics unit is the weak point of these gearboxes and is a result of many faults do to the oil seaping into the plastics and eating away at the circuit boards among a few other issues.
This was the first point of call when I lost 6th gear, what I did was remove the unit and send it to a place in Heanor called "ECU Testing". They will take your unit and test it for £45, and if there is a fault found they will rebuild it for £400 + tax after consulting you and getting the go ahead. I figured what will £45 be on top of the cost of repair so it was worth ago... mine found to have a fault in line with the symptoms.
After rebuilding the unit and finding remaining issues meant I had a mechanical issue which is rare, but obviously not impossible. Did the removing of the mech unit which took 2 hours (dont have to remove box for this, it comes out through the sunp) and also the gearbox myself which took a day, if you are mechanically minded and with abit of research on YouTube you could potentially do this yourself (although the box is about 150kg and nearly 4ft long so wouldn't take that out without a 2 post lift and some friends for steadying). With the box out knowing the issues was in the gears I called around and was told the box is scrap and to buy a second hand one which was the cheapest option at £1250, but found a place called M&T transmissions in Sheffield who within days saved my box for £1900 + tax which made sense as a second hand is an unknown box.
Note that basic settings and adaptions is required on refitting which is done with official VAG diagnostics software so unless you have access is a specialist/dealer cost.
This can be a repair that can get pricy so perhaps the best first step would be to consult with a local vag specialist to you if you haven't already?
With doing the labour of removing the box and installing myself it still cost me around £3000 to fix with give or take £2000 for the box repair, £500 mech unit rebuild and then odds and sods like oils, bolts to renew and seals for another few hundred £s. Of course it could have been cheaper with just slapping another box in but it's not a repair to cheap out on in my opinion. Hopefully this helps.
The reason for no 2nd or reverse is because they are on the same selector controlled by the lowest solenoid on the mechatronics unit I believe. As you may find through Google this mechatronics unit is the weak point of these gearboxes and is a result of many faults do to the oil seaping into the plastics and eating away at the circuit boards among a few other issues.
This was the first point of call when I lost 6th gear, what I did was remove the unit and send it to a place in Heanor called "ECU Testing". They will take your unit and test it for £45, and if there is a fault found they will rebuild it for £400 + tax after consulting you and getting the go ahead. I figured what will £45 be on top of the cost of repair so it was worth ago... mine found to have a fault in line with the symptoms.
After rebuilding the unit and finding remaining issues meant I had a mechanical issue which is rare, but obviously not impossible. Did the removing of the mech unit which took 2 hours (dont have to remove box for this, it comes out through the sunp) and also the gearbox myself which took a day, if you are mechanically minded and with abit of research on YouTube you could potentially do this yourself (although the box is about 150kg and nearly 4ft long so wouldn't take that out without a 2 post lift and some friends for steadying). With the box out knowing the issues was in the gears I called around and was told the box is scrap and to buy a second hand one which was the cheapest option at £1250, but found a place called M&T transmissions in Sheffield who within days saved my box for £1900 + tax which made sense as a second hand is an unknown box.
Note that basic settings and adaptions is required on refitting which is done with official VAG diagnostics software so unless you have access is a specialist/dealer cost.
This can be a repair that can get pricy so perhaps the best first step would be to consult with a local vag specialist to you if you haven't already?
With doing the labour of removing the box and installing myself it still cost me around £3000 to fix with give or take £2000 for the box repair, £500 mech unit rebuild and then odds and sods like oils, bolts to renew and seals for another few hundred £s. Of course it could have been cheaper with just slapping another box in but it's not a repair to cheap out on in my opinion. Hopefully this helps.
Joined
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13 Posts
It was working prefect moving the car around the house went down the road stopped at a junction and it popped up on dash gearbox malfunction and no reverse limped it home and found no 2nd gear either the mechatronic has bin rebuilt my them already don't I can clear code but comes straight come on so the mechatronic has gone back to them
Hmm, I believe the ecu has a fault counter built in because after 2 times of turning the car off and on again and it doing the fault it stayed on permanently. Removed the battery for a while and reconnected to clear and then the same, after 2 it did it... Was this the first time for you?
What was the fault it was rebuilt for before?
Joined
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13 Posts
It was rebuild for actuator 2 mechanical fault now this popped up I've tried clearing the 8 about 8 times
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