C-Class
W205
W206
P07B700 and P073E00
Loss of Reverse Gear
The Mercedes C-Class (W205) commonly suffers from internal faults within the 9G-Tronic Transmission Control Module (TCM), often triggering fault codes P07B700 – Pressure sensor signal is invalid and P073E00 – Reverse gear does not engage. These faults typically result in a range of drivability issues including loss of reverse gear, intermittent or complete loss of forward gears, jerky gear changes, and the gearbox entering limp mode. Warning messages or gear selection faults may appear on the instrument cluster, particularly after extended driving or when the vehicle is hot.
At VCUS, we offer a specialist repair service for the original 9G-Tronic TCM fitted to the W205 C-Class. We rebuild your unit using uprated components designed to withstand higher thermal stress, addressing the root cause of failure rather than simply replacing like-for-like. Our service includes comprehensive testing, a detailed repair report, and is backed by an unlimited mileage lifetime warranty — with no coding or adaptation required once refitted.
Mercedes C-Class 9G-Tronic TCM Repair – Fast, Reliable & Cost-Effective
At VCUS, we specialise in repairing the Transmission Control Module (TCM) fitted to the Mercedes C-Class (W205) 9G-Tronic (725.0) gearbox. If you're experiencing fault codes such as P07B700 or P073E00, or symptoms like loss of reverse, gearbox limp mode, or jerky gear changes, our expert repair service offers a fast and affordable solution. Every unit is fully rebuilt using upgraded components, tested, and backed by our unlimited mileage lifetime warranty.
This is a plug & play repair — no coding or programming is required. Once repaired, simply refit the unit and enjoy full gear functionality again.
How to Get Your Mercedes C-Class TCM Repaired:
Remove the 9G-Tronic TCM from your Mercedes C-Class (W205).
Fill out our TEST FORM and select a convenient date for free insured collection.
Package the unit securely with adequate internal protection.
Or send it directly to:
VCUS
Vehicle Control Unit Solutions
27 St Michaels Square
Bramcote
Nottingham
NG9 3HG
We will receive, test, and complete the repair of your TCM.
No payment is required until the repair is complete.
Your rebuilt unit will be returned via Next Day Delivery.
Simply reinstall — no coding or adaptation needed — and drive away with confidence.
Why Choose VCUS for Your Mercedes C-Class TCM Repair?
Express and standard turnaround options available
No reprogramming or coding required – plug & play
Unlimited mileage lifetime warranty
More affordable than main dealer replacements
Hassle-free service with free UK-wide collection
Don’t let a faulty transmission control module keep your C-Class off the road. Book your repair with VCUS today and enjoy a fast, permanent fix with full peace of mind.
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Vehicle Control Unit Solutions Limited.
Limited Company Number: 15019362