Welcome to ControlUnits.com - Electronics Remanufactured - #1 Automotive Centre in the UK -
Welcome to ControlUnits.com - Electronics Remanufactured - #1 Automotive Centre in the UK -
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Audi S-Tronic TCU Repair DSG DL501 (0B5927256B / 0B5927156F)
SKU
TRA1611
- Part No: 0B5 927 256 B / 0B5 927 156 F
- Fits Audi models
- 0B5 TCU compatibility
- Restores transmission efficiency
From
£299.00
Fast Turnaround
2-5 working days
Warranty Protection
Covering all our repairs
Choose your service
Repair Service (by post)
Send us your unit — we repair and return it. Add to order and complete the quick vehicle form; free UK shipping label included.
Send us your unit. We repair & return it. Free UK shipping label.
£299.00 (Excl. 20% VAT)
Repair & Fitting (on-site)
On-site removal & refit by our technician. Booked by phone only — call 01884 798090. Not available to order online.
We remove, repair & refit the unit while you wait. Call 01884 798090
£899.00 (Excl. 20% VAT)
To arrange on-site fitting, please give us a call on 01884 798090 and we’ll book you in.
This option can’t be ordered online – please give us a call on 01884 798090.
★★★★★ “Any issues with abs units this is the team to sort it 👍” — Adrian B.
★★★★★ “really good company , very fast repair done on a.b.s. control unit” — Anonymous
★★★★★ “Excellent service. Great company to deal with, very helpful. Would certainly use again.” — Gordon M.
★★★★★ “It’s good to have this gang on hand when it comes to gearbox electronics.” — Pawel P.
★★★★★ “Very professional , very prompt, well organised, thank you.” — Peter B.
★★★★★ “Good service on phone when ordering. Not able to say any more until part is fitted and see how it works!” — Eddie M.
Audi S-Tronic TCU DSG DL501 repair
24-month warranty2–5 day turnaroundTracked return deliveryNo coding needed
We repair the Audi S-Tronic TCU DSG DL501. Listed under part numbers 0B5927256B and 0B5927156F. Send us your original unit: we test it on the bench, replace the failed components on the circuit board, then test it again before it goes back to you — usually within 2–5 working days. You get your own unit back rather than a replacement, so it keeps the coding and security data already matched to your car — no programming or dealer visit needed. Every repair carries a 24-month warranty.
Not sure the TCU is the cause? The symptoms and the fault codes we see on this unit are listed under Common Faults. If your codes differ, send them over before ordering — if the unit turns out not to be faulty you only pay the test fee and return postage.
Which vehicles does this TCU fit?
This unit is used across Audi. Check your exact model and year under Matching Vehicles, or compare the number printed on your own unit with the part numbers listed on this page. The same hardware often appears under several part numbers — call 01884 798090 if yours is not shown.
Prefer not to remove the unit yourself?
Choose the on-site option and bring the vehicle to our workshop in Uffculme, Devon. We remove, refit and road-test it before you drive away, usually the same day.
Part numbers
| Part Number | Part Number | Part Number |
|---|---|---|
| 8R0927156Q | 0B5927256B | 0B5927156F |
| 8R0927156T | 0B5927256B | 0B5927156F |
| 0B5927156F | 0B5927256B | 0B5927156F |
| 4G0927156J | 0B5927256B | 0B5927156F |
| 4G0927156K | 0B5927256B | 0B5927156F |
| 4G0927156L | 0B5927256B | 0B5927156F |
| 4G0927156M | 0B5927256B | 0B5927156F |
| 4G0927156N | 0B5927256B | 0B5927156F |
| 4G0927156S | 0B5927256B | 0B5927156F |
| 4G1927156A | 0B5927256B | 0B5927156F |
| 4G1927156B | 0B5927256B | 0B5257156F |
| 4G1927156C | 0B5927256B | 0B5927156F |
| 4G1927156D | 0B5927256B | 0B5927156F |
| 4G1927156J | 0B5927256B | 0B5927156F |
| 4G2927156B | 0B5927256B | 0B5927156F |
| 8K1927156F | 0B5927256B | 0B5927156F |
| 8K1927156G | 0B5927256B | 0B5927156F |
| 8K1927156H | 0B5927256B | 0B5927156F |
| 8K1927156J | 0B5927256B | 0B5927156F |
| 8K1927156L | 0B5927256B | 0B5927156F |
| 8K1927156M | 0B5927256B | 0B5927156F |
| 8K1927156R | 0B5927256B | 0B5927156F |
| 8R0927156R | 0B5927256B | 0B5927156F |
| 8R0927156S | 0B5927256B | 0B5927156F |
Frequently asked questions
Does the unit need coding or programming afterwards?
No. This is a repair, not an exchange — you get your original unit back, so it keeps the coding and security data already matched to your car. Refit it and clear any stored fault codes with a diagnostic tool.
How long will I be without the unit?
We aim to complete all repairs within 2–5 working days. Should a repair take longer, we will contact you with an update. It goes back to you on a tracked service. Ask about on-site fitting if you need the car back the same day.
My part number isn’t in the list — can you still help?
Usually yes. The same hardware appears under many part numbers. Send us a photo of the label or call 01884 798090 and we’ll confirm before you send anything.
What warranty do I get?
Repairs of this unit carry a 24-month warranty. See Returns & Warranty for the full terms.
Will the warning light go out after the work?
Yes, once the unit is refitted and the stored codes are cleared, provided the fault was in this unit. If a related wiring or sensor fault is also present it has to be fixed separately — we tell you what we found.
Common Faults
What are the symptoms of a failing DL501 S-Tronic TCU?
- No communication with the Transmission Control Unit
- Connector damaged by moisture / coolant ingress
- Connector pins damaged or corroded
- Connectors mechanically torn off
- Ribbon tape damaged
- “Gearbox malfunction” warning displayed on the dashboard
- Flashing gear indicator on the instrument cluster
Common fault codes
| Fault code | Meaning |
|---|---|
| P17D6 / 8957 | Clutch 1 Pressure Too High – repair available on request |
| P17D7 / 8962 | Clutch 2 Pressure Too High – repair available on request |
| Other TCU faults – please contact us for assessment |
Different symptoms or fault codes – or no codes at all? Call 01884 798090 or use our contact form. We’ll help assess the issue before you send your unit.
Contact usMatching Vehicles
| Make | Model | Years |
|---|---|---|
| Audi | A4 | B8 (2007-2015) |
| Audi | A5 | B8 (2007-2016) |
| Audi | A6 | C7 (2011-2018) |
| Audi | A7 | C7 (2010-2018) |
| Audi | Q5 | 8R (2008-2017) |
| Audi | RS5 | B8 (2007-2016) |
| Audi | S4 | B8 (2007-2015) |
| Audi | S5 | B8 (2007-2016) |
How It Works
Repair by post
2–5 working days
-
Step 1
Order online
Add the service to your basket. We ask for your vehicle details and fault codes – no separate repair form.
-
Step 2
Send us your unit
Pack it securely and post it with the free UK shipping label – or ask us to arrange a collection.
-
Step 3
We test & repair
Every unit is tested first, then repaired within 2–5 working days. Not faulty? You only pay the test fee and postage.
-
Step 4
Back to you, tracked
Returned by DHL Express or DPD. Pay at checkout or choose Pay After Repair.
On-site fitting
Call to book
Prefer on-site fitting?
Bring the vehicle to our workshop in Uffculme, Devon. We remove, repair and refit the unit while you wait (about 2–3 hours), road-test the car and you pay on collection.
More details: How to order Delivery pricing Returns & warranty
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