MQB - TTRS Spoiler Coding Question.

[TheBlondeFella]

I have just purchased a 2022 Mk3 Audi TTRS to replace the Golf R. It was almost the perfect car but the original owner specced the car with an electric rear spoiler rather than the fixed spoiler. I have managed to find a used but complete OE Audi fixed spoiler from a similar specced car that I intend to fit to my new car.

 

The electric spoiler is attached to a large metal base which is a slightly different metal base to the fixed spoiler so that metal base can be attached to the bodywork for extra strength. As such, I need to disconnect the spoiler motor and its' metal base to swap in the fixed spoiler metal base. 

 

If I simply disconnect the spoiler motor an error code will appear on the dash and the ESP will be permanently engaged. 

 

There is an option in OBD11 (Control Units, 09 Central Electrics, Adaptation, Allwetterlicht Spoiler, TT Spoiler and then change the option from Elektrischer Spoiler To Feststehender Spoiler) to change the coding from electronic spoiler to fixed spoiler which stops the electric spoiler from being operated / deployed,  but I am getting differing advice as to whether an error code will still be generated when the spoiler motor is disconnected.

 

A member of the TT Forum has stated the following coding stopped any error being displayed when he disconnected his spoiler motor on both his and another members car. The first part  in 9 - Central Electric seems straight forward but know one can seem to find anything relating to the rear spoiler (the 2nd part) in 17 - Dashboard.

 

The OP sates the following;

 "Hey Guys to upload everyone about the spoiler thing from electric to fix
So We spent about 3h with Stanly and finally fixed it

So for everyone going on a fix spoiler: UNPLUG THE ELECTRICAL SPOILER ONLY AFTER HAVING THE SPOILER INSIDE (NOT EXTENDED) AND AFTER CODING THIS 2 MODULES WITH ODB ELEVEN PRO:

9 central electric: long coding find spoiler and code it (there is 4 possible options) as UNMOUNT 
17 DASHBOARD: adaptation or long coding don't remember now find spoiler (2possible options YES or NO): NO 

Go back in 9 central election electric live data find spoiler and verify that spoiler status is: spoiler not mounted

Then turn off engine, turn on engine verify that when pressing the spoiler button nothing happen"

Turn off again the car and now you can unplug the spoiler

 

Any  coding gurus on here that have any ideas / knowledge of this or suggestions on where / how I can find the required coding in 17 - Dashboard?

[NRW]

2 hours ago, TheBlondeFella said:

a 2022 Mk3 Audi TTRS to replace the Golf R

..Wow. That sounds a serious bit of kit. Very nice. 

[dv52]

@TheBlondeFella: Hi.

 

I haven't personally dealt with a spoiler retro-fit project, but an Audi- TT mk3 is built on a MQB platform - so, it shares the same DNA as other MQB model cars. 

 

I've looked through my MQB platform database and there IS a coding function for the spoiler on the 17 module, which OBD11 calls "Dashboard". However, the facility is a software switch on the module's long-code string, rather than being an adaptation channel. I include below a picture of the relevant part of long-code using VCDS (I don't have the equivalent screenshot from OBD11):

 

 

As shown, the software switch for the rear-spoiler is Byte 14, Bit 7. Of course it's the same with OBD11 -so before project commencement, I suggest you fire-up OBD11 and navigate to Byte 14 on the Dashboard module and confirm that Bit 7 is actually set on this car.

 

As for the central electrics module's role in this exercise - according to my MQB database and assuming that the 09 module on this car does NOT have an active long-code string, there can be 3 x spoiler related adaptation channels on the newer 09-modules. The spoiler channels with their values for an electric spoiler are as follows:

Allwetterlicht_Spoiler

• Spoiler Einfahrunterdrueckung nach manuellem Ausfahren > active
• Spoiler Komfortsenken des Spoiler ueber Schliesszylinder FT > active
• tt_spoiler > installed

I'm not sure if all 3 x channels are in the 09 module for this car. However, I suggest that you confirm the channels and settings - again before you start the project 

 

Don

[TheBlondeFella]

7 hours ago, NRW said:

..Wow. That sounds a serious bit of kit. Very nice. 

Thanks. Took me over a year to find a Vorsprung in the colour I wanted.

[TheBlondeFella]

Hi Don

 

You are an absolute STAR! 

I knew you would be able to offer some advice.

 

Thank You!!!!!!

[TheBlondeFella]

On 09/11/2025 at 19:34, dv52 said:

@TheBlondeFella: Hi.

 

I haven't personally dealt with a spoiler retro-fit project, but an Audi- TT mk3 is built on a MQB platform - so, it shares the same DNA as other MQB model cars. 

 

I've looked through my MQB platform database and there IS a coding function for the spoiler on the 17 module, which OBD11 calls "Dashboard". However, the facility is a software switch on the module's long-code string, rather than being an adaptation channel. I include below a picture of the relevant part of long-code using VCDS (I don't have the equivalent screenshot from OBD11):

 

 

As shown, the software switch for the rear-spoiler is Byte 14, Bit 7. Of course it's the same with OBD11 -so before project commencement, I suggest you fire-up OBD11 and navigate to Byte 14 on the Dashboard module and confirm that Bit 7 is actually set on this car.

 

As for the central electrics module's role in this exercise - according to my MQB database and assuming that the 09 module on this car does NOT have an active long-code string, there can be 3 x spoiler related adaptation channels on the newer 09-modules. The spoiler channels with their values for an electric spoiler are as follows:

Allwetterlicht_Spoiler

• Spoiler Einfahrunterdrueckung nach manuellem Ausfahren > active
• Spoiler Komfortsenken des Spoiler ueber Schliesszylinder FT > active
• tt_spoiler > installed

I'm not sure if all 3 x channels are in the 09 module for this car. However, I suggest that you confirm the channels and settings - again before you start the project 

 

Don

Hi @dv52

 

So after waiting many, many months(it feels like years!)  the paintwork for the spoiler has finally been finished (don't ask why its taken so long 🥴) and I'm ready to install it this weekend.

 

I'm not only nervous about the actual fitting of the spoiler but I'm super nervous about the coding I need to do. 

 

Although I've ventured into the Adaptions menu for my old Golf R to change some if the brake settings, I've never undertaken any 'Bit or`Byte" modifications on any of my cars and am not 100% sure how to start.

 

Would you be able to give me a rough idiots guide on how to get started please?

 

Any help would be greatly appreciated 

 

Cheers Steve.

[dv52]

2 hours ago, TheBlondeFella said:

Hi @dv52

 

So after waiting many, many months(it feels like years!)  the paintwork for the spoiler has finally been finished (don't ask why its taken so long 🥴) and I'm ready to install it this weekend.

 

I'm not only nervous about the actual fitting of the spoiler but I'm super nervous about the coding I need to do. 

 

Although I've ventured into the Adaptions menu for my old Golf R to change some if the brake settings, I've never undertaken any 'Bit or`Byte" modifications on any of my cars and am not 100% sure how to start.

 

Would you be able to give me a rough idiots guide on how to get started please?

 

Any help would be greatly appreciated 

 

Cheers Steve.

 

Steve: Yes, I totally understand your reticence in undertaking your inaugural long-code change -  but it really ain't rocket science and in many ways it's actually easier than fiddling with adaptation channels. Yes, there is the complication of the Byte/Bit language - but ALL good diagnostic devices side-step the need to do hexadecimal mathematics (which I enjoy because I like thinking in base-16 counting, instead of decimal). 

 

However, as I said in my first response - I've NOT done this project and I've had to extrapolate code descriptors from another car on the assumption that both vehicles are built on a MQB platform. You know what they say about assumptions (it makes an ass.....). So, we need to establish the veracity of my assumptions as the first step in the coding exercise - which will entail you reporting the coding values on this car that I identify in my first reply.

 

I'm more than delighted to guide you through the process - BUT- there's a crucial piece of information that's missing in your posts and it stops us moving forward. Which diagnostic device will you use (it matters!!)?

 

Don 

[TheBlondeFella]

@dv52 Thanks for the prompt reply as always.

 

I'll be using OBD11 Pro. 

 

I've done a little more research and I think there won't be a requirement for any "Bit' or 'Byte' coding.

From what I can tell now, between your initial reply and a little more playing with the OBD11 App I just need to select the either the yes or no option available to me under 'spoiler' 

[dv52]

@TheBlondeFella: Steve: Hmm......... OK, maybe you are correct that no long-code changes are needed to the central electrics module (BCM)- I bow to your better understanding of this matter

 

But if this car was factory built with an electric spoiler - then almost certainly a spoiler module (J139) will be installed. J139 has two connectors:

• a 7 x pin connector that connects the module to the CAN bus and to the 09 module (and to the position sensor in the physical spoiler)
• a 2 x pin connector that connects to the spoiler motor

And it's entirely likely that Byte 17, Bit 4 on the 09 module will be factory set to activate spoiler calibration and spoiler operation. If I'm correct (and I freely admit that I may be wrong):

if Byte 17,  Bit 4 is left enabled (i.e. =1):

• BCM will activate spoiler logic

• BCM will send CAN messages to J139

• Manual switch will work

• Cluster will show the spoiler symbol

• Speed thresholds will be enforced

• Faults from J139 will be forwarded to the cluster

If Byte 17, Bit 4 = 0 (disabled):

• BCM will ignore J139

• Manual switch will do nothing

• Cluster will hide the spoiler symbol

• BCM may log “incorrectly coded” if J139 is present

AND the Dashboard module likely will have an adaptation channel spoiler installed = active as factory coding to enable the spoiler symbol.

 

So, I suggest that you proceed as you intend - but if the loose moist stools in the brown stuff collide with the proverbial fan blades, lets continue this discussion!

 

Don 

[TheBlondeFella]

Hi Don

 

in OBD11 under long coding for 17 - Dashboard I only have the option of either 'yes' or 'no' for spoiler so there was no need for selecting a bit or byte thankfully which made my life a little easier.

 

Under 09 - central electronics I selected not installed 

 

These settings seems to have worked perfectly and I have no error codes on the cars dash after disconnecting the electric spoiler motor.

 

I re -scanned after this and have no error codes there either so I assume everything went well

 

Thanks for all you help

 

 

[dv52]

@TheBlondeFella: Well done!!

 

Don