Mercedes Viano W639 CDI 2.2 Mass air flow sensor (136 hp Diesel OM 651.940)

Any and all spare parts we supply are solely intended for the designated purpose as defined by us. Installation by trained personnel only. Our products are usually supplied without assembly instructions. Installation in vehicles other than those specified by us may lead to the exclusion of warranty.

efore replacing the air flow meter it is essential to reset Our products are usually delivered without installation instructions. Installation may only be carried out by the control unit to the basic values - observe the manufacturer's instructions! Installation may only be trained specialist technicians. Products supplied by us are carried out by trained professionals! exclusively intended for proper and appropriate use. The warranty is void in the event of improper, contrary to the intended purpose or unsuitable application or use.

For electronic items that leave fault memory entries, it is essential to submit fault memory logs in the event of a claim. This consequently concerns all electronic items that are detected, monitored and controlled by the engine control unit, such as sensors of all kinds (e.g. NOX sensors, ABS sensors), mass airflow sensors, airbag slip rings, headlamp levelling control units, throttle valves, lambda sensors or EGR modules.

If you encounter difficulties during a repair (troubleshooting max. 1 hr.), please contact technical support at:

Phone: 040 - 25 30 66 55 Email: [email protected]

This often avoids extensive troubleshooting that is disproportionate to normal repair times.

The following applies to complaints: The more complete the processes are submitted, the faster they can be processed.

Complete documentation includes the warranty application (incl. KBA no., chassis no., first registration, engine code, mileage), first and second installation invoice, fault memory log, guided troubleshooting and, if applicable, pictures. Incomplete documentation may result in rejection of the claim.

These products are designed to be used as originally intended and not modified for purpose. Please ensure the products are installed by a competent individual. N.B. products are usually supplied without fitting instructions.