Mercedes-Benz 9G-Tronic: Remanufactured to Last by ACTRONICS

Do you have a Mercedes-Benz in your workshop that struggles to engage Reverse (R) or does not engage at all? This is a common symptom of a faulty Transmission Control Unit (TCU) in the Mercedes-Benz 9G-Tronic (725.0) automatic transmission. ACTRONICS offers a high-quality remanufacturing service for this advanced component used in the 9-speed automatic gearbox. Our specialists repair complex electronic faults and failures within the TCU of this electro-hydraulically controlled transmission. The unit is returned, Plug & Play, cost-effective, sustainable and covered by a 2-year warranty.

Common Mercedes 9G-Tronic Problems

A defective TCU can cause various drivability issues. The most frequently reported problem with a faulty 725.0 9G-Tronic TCU is: Reverse gear (R) does not engage or only engages after multiple attempts Other issues that TCU faults can cause include: No gear engagement when shifting from N to D Vehicle shifts directly into D3 instead of D1 Vehicle spontaneously shifts from D to N Delayed or harsh gear shifts, especially at high temperatures or after long drives Vehicle stuck in Park (P) Slipping gears or fluctuating engine RPM Vehicle entering limp mode which keeps the transmission locked in a single gear

Mercedes-Benz 9G-Tronic (725.0) TCU Fault Codes

A failing TCU can trigger various fault codes. The most common codes linked to a defective unit are: P07B700 Pressure sensor: Signal not plausible, P073E00 Reverse gear: Signal faulty

Other fault codes that may appear include:

P073E Reverse gear: Signal faulty
P07B571 Park lock solenoid: Electrical fault
P07B623 Park position sensor: Signal too high
P07B624 Park position sensor: Signal too low
P07B634 Park position sensor: Signal not reliable
P07B635 Park lock signal: Not reliable
P07B7 Pressure sensor: Signal not plausible
P07E400 Park position cannot be engaged
P07EF00 Park position cannot be engaged

These codes typically indicate faults in the electronic control of the transmission. Our remanufacturing solution effectively resolves these issues. If you are dealing with additional fault codes or other 9G-Tronic problems, feel free to contact us for advice.

Mercedes Models with 9G-Tronic Issues

The 9G-Tronic transmission is used in a wide range of Mercedes-Benz models from 2013 to the present. Common applications include:

C-Class: W204, W205, C204, S204, V205, S205, C205, A205
E-Class: W212, S212, C207, A207, W213, S213
S-Class: W222
GLC-Class: C253, X253
GLE-Class: W166, C292 GL and GLS-Class: X166
M-Class: W166

If your Mercedes shows 9G-Tronic issues in one of these models, TCU remanufacturing is often the most effective solution.

Why Choose ACTRONICS for 9G-Tronic TCU Remanufacturing?

Remanufacturing is a smart choice for workshops, dealers and independent automotive businesses. With ACTRONICS, you benefit from:

Significant cost savings compared to a new TCU
A sustainable alternative to replacement
Plug & Play operation without the need for programming
A 2-year warranty on the remanufactured unit
Expertise in Mercedes transmission electronics

Start a Remanufacturing Order

Working on a Mercedes with 9G-Tronic problems? Start your remanufacturing order by selecting the vehicle and part number at the top of this page. Log in or create an account to submit your request quickly and easily. We inspect, clean, test and remanufacture the TCU and return it fully functional and ready for use.