Lack of audio or cell phone functionality may be related to the failure of the audio gateway module.
Resources for the Repair and Maintenance of your 2008 Mercedes-Benz E320 BLUETEC
2008 Mercedes-Benz E320 BLUETEC
2008 Mercedes-Benz E320 BLUETEC Problems
High mileage or older vehicles commonly develop leaks from the differential seals and/or cover. Our technicians recommend a complete reseal of the differential unit whenever these leaks are repaired.
The early versions of the central gateway module (which allows different systems to communicate with each other) have software problems.
Water can damage the weight sensor in the front, passenger seat, causing the SRS (airbag) light to illuminate. There is an electrical component in the seat cushion susceptible to fluid damage. Any spills should be dried up immediately in order to try and prevent damage to the sensor.
It is not uncommon to encounter premature failure of the anti-lock brake system (ABS) modulator assembly due to dirty brake fluid. Our technicians recommend flushing the brake fluid every two years in order to help prevent this problem.
2008 Mercedes-Benz E320 BLUETEC Questions and Answers
Can you provide me with the service schedule for a 2008 E 320 Blue Tec?
THE TRANSMISSION WILL NOT KICK DOWN AND IT ALSO SHIFTS GEARS TO FAST.COULD THIS BE A PROBLEM WITH THE THROTTLE POSITION SWITCH. WILL REPROGRAMING IT HELP
Which terminal, positive or negative, do I connect first? In this model what, if anything, do I also need to do for getting electronics back in sync (e.g. digital clock,power windows,sunroof, auto ...
2008 Mercedes-Benz E320 BLUETEC Reviews
I LOVE this car! fuel mileage is great, power is wonderful, takes corners terrific. I've put nearly 20k miles in six months and overall could not be happier. ONLY thing I'm not crazy about is the GPS, and the electronic "files" you have to scroll through to make changes... very cumbersome.
I love this car. Great mileage and a 6 cylinder turbo diesel engine that feels like an 8 cylinder on steroids.