Mercedes GLS X166 (2017–2019) 9G-Tronic TCM/TCU Repair – Fix P073E00 & P07B700

Mercedes GLS X166 (2017–2019) 9G-Tronic TCM/TCU Repair – Fix P073E00 & P07B700

Registered Company, Professional industry standard equipment used only, verified & tested upon completion

We are qualified Auto-Electricians running a FULL AUTO ELECTRICAL SERVICE 

⚠️ Fault Code: P073E00

“Reverse Gear Cannot Be Engaged”

Common Symptoms:

• Reverse gear fails to engage at all

• Gear lever moves to “R” but no response from transmission

• Vehicle may roll freely or remain stationary when reverse is selected

• No mechanical resistance or engagement felt

• May trigger limp mode or warning lights on the dash

⚠️ Fault Code: P07B700

“Pressure Sensor Signal Invalid”

Common Symptoms:

• Transmission stuck in limp mode (limited to 2nd or 3rd gear)

• Jerky or delayed gear shifts

• Inconsistent clutch engagement

• Dashboard warning lights (transmission or engine fault)

• Gear selection hesitation or refusal to shift

• Sporadic loss of drive or gear hunting

Please contact first to fill in a repair form