Customer questions

MERCEDES-BENZ R-CLASS (W251, V251) R 320 CDI 4-matic (251.022, 251.122) - Lower Control Panel - 9010

Customer question from Feb 19, 2018, 2:40:42 AM
symptoms

  • Costal

Answer from Feb 19, 2018, 6:03:17 AM

Hello and thanks for your question in the autoaid Community.
This fault Code means: CONTROL MODULE, SUPPLY VOLTAGE TOO LOW (UNDERVOLTAGE)
You have to Check the Battery, also measure the loading Voltage from the Generator to the Battery. If this car isn‘t always in usw, you should reload the Battery.
But let Check the Battery with a Battery Test. If there is a Problem, then you should replace the Battery.

Greetings
Team autoaid

A perfect match for your car:
Repair manuals & autoaid diagnostic tools

Discover now