Genuine Mercedes-Benz electronic gear selector unit (722.9 Intelligent Servo Module), OE part A000‑270‑17‑52. This module precisely shifts the internal lever of your 722.9 automatic transmission based on electrical signals, restoring smooth and responsive gear selection.

NOTE: Coding required. Requires programming to your vehicle's VIN/transmission coding post-installation.

The following Diagnostic Trouble Codes (DTCs) are commonly associated with a failing or faulty Intelligent Servo Module (ISM) on 722.9 automatic transmissions:

From Transmission Control Unit (TCU/EGS)

• P0705 – Transmission Range Sensor Circuit malfunction (PRNDL input)
• P0706 – Transmission Range Sensor Performance
• P0722 – Output Speed Sensor No Signal
• P0720 – Output Speed Sensor Circuit Malfunction
• P173F – Component Y3/8n4 (Transmission range sensor) is defective
• P17F8 – Internal electrical control of ISM has malfunctioned
• P17F0 – ISM not configured or not recognized by TCU
• P17F4 – ISM position sensor fault (range/plausibility)
• P17F5 – Gear cannot be engaged or shift is blocked
• P17F1 – CAN communication with ISM is faulty
• P17D8 – Fault in transmission control module regarding range selection

From ECU or Other Control Modules

• U0103 – Lost Communication With Gear Shift Control Module
• U0415 – Invalid Data Received from Transmission Control Module
• U0404 – Invalid Data Received from Gear Shift Control Module
• U1000 / U1003 – CAN communication errors (generic)

Typical Symptoms

• Gear selector stuck in “P” or “N”
• Vehicle won’t start or needs multiple attempts
• No gear engagement or delayed shifting
• PRND indicator not displaying properly
• Warning on dash: “Visit Workshop” / “Transmission Malfunction”
• Faults stored in multiple control modules

Note: These codes typically require professional diagnostics to confirm ISM failure. Replacement and programming may be necessary.

Scope of delivery:

• 1× Mercedes-Benz OEM 722.9 electronic gear selector unit (A000‑270‑17‑52 / A000‑270‑18‑52 compatible)