7226

1996 and up Mercedes 722.6 and 722.9 series automatic transmissions

There are a number of reasons for the failure of the 722.6 and 722.9 style transmission. If your car is in the shop or if you are a shop, scan for error codes and use our DTC code list: DTC Code List

The switch inside the shifter, speed sensors or even engine sensors can cause a transmission malfunction. If there are any noises coming from the transmission, or if there is metal at the bottom of the transmission oil pan, the transmission has failed. This type of mechanical failure is common

We have determined that the single most common reason for transmission failure is because the transmission oil and filter is never changed. Old, contaminated transmission oil looses it's lubrication quality. A buildup of clutch material sluffed off over the years will make the fluid abrasive, sticking valves in the valve body as well as increasing the rate of failure of transmission gear and bearing components, creating metal shavings to appear at the bottom of the transmission oil pan also gathering on the speed sensor pickups. This condition can cause the transmission to go into limp home mode.

Follow this link to an excellent article about Transmission oil and transmission failure published in: Yahoo! Autos

We require changing the transmission oil and filter every 2 years or 24,000 miles. We allow Dexron^Ž-III to be used in our rebuilt transmissions.

722.9 transmission rebuilds are restricted because of Daimler TRP policies which restrict purchase of valve body and shifter parts including ETC (transmission computer) related parts. Their policy is to limit repair of these components to authorized Mercedes Benz Dealerships. This arrogant policy is an unfair burden on the consumer as well as independent repair stations which thrive on providing reasonable repairs as an alternative to Mercedes Benz dealers. The unfortunate result is a diminished return of repeat buyers of Mercedes Benz vehicles.

Follow this link to a great article explaining TRP: ftp://motor.com/TRP/TRP_Feature.html

If you are a repair station and have lost revenue due to the TRP policies of MBUSA, you can register a complaint at the following location: http://www.beckmanntechnologies.com/trp.php

SUN VALLEY MERCEDES TRANSMISSIONS

Rebuilt automatic transmissions

11203 Tuxford Street
Sun Valley, California 91352
Phone: (818) 7680704
E-mail: sunvalleymercedes@gmail.com

Back to: Automatic Transmission Technical Information