150 miles on my E500...

1. There is a soft ticking sound under acceleration that pretty much disappears when you let off the throttle. Step on the gas again and tick, tick, tick... the ticks increase in speed and repetition as the revs increase. It sounds like a motor mount issue. I took the car in for the techs to "take a listen". They heard the sound, and advised to keep on driving to allow more miles for the "break in" period.

All you motor mount folks... has this been your experience? I don't think this sound is going anywhere, and it sure is annoying.

2. Big-time static while playing a CD. The other night, I'm cruising to a nice CD and WHAMMO! Loud mother static from what seemed like all speakers... but I could still hear the CD playing in the background. I hit mute, and all was quiet. Un-mute and all the noise was back again. I did the 'ole Fonzie turn it off and on again thing and all was well.

THEN, it happened again. This time MUTE would not make any static go away and then the music quit playing all together with the audio display reading "Unable to establish audio connection". Does this sound like a bad rear window GPS antenna, bad changer, overheating gateway module, or etc...???

Hmmm... pretty sad for a $60K car.

I have searched the archives on both problems, and would appreciate your comments and input.

Thanks!

 

Sounds like motor mounts and an overheating gateway module to me!

 

NuBenz...

I answered your p.m. with the service bulletin number on the motor mounts.

I have had no trouble with the HK system. Hope it stays that way.

Ed

 

Nubenz:

Your engine ticking sound is exactly what I experienced with the motor mount problem. I had about 400 miles and took in to the dealer. They test drove it, confirmed the problem, but had to order the parts. After they were installed, that noise disappeared. I don't think waiting will make the problem go away.

No problems so far with my HK system.

Good luck with the motor mounts.

 

I appreciate your help!

mbtech208, do you have a TSB number on the "overheating gateway module"?

The tick, tick, ticking is driving me nuts, nuts, NUTSO!!! But at least I can still make people in my rearview disappear with a half-hearted drop of the right foot...

 

I have my E320 in the shop as I'm typing this. This is the 2nd time it has been in the shop for "loss of power". The first time there was no static involved and the Audio Gateway was replaced, search my name for the thred for the information on that, this time loss of audio is preceeded by static that becomes louder and louder until the power is removed from the whole system. This is a heat related problem that has been discussed before. My dealor says that have seen about 6 custermers this week and last week with the same problems. There is no fix per my service advisor AND per the Maintence Tech that I deal with there. Below is a copy of one of the latest Star Bullitins regarding this. Due to formatting and scanning the first part is a bit jumbled up. It is dated May 27, 2003.
--
rT\ Mercedes-Benz (~
'<:::;:~' star bulletin
.~I.
Date: Ma
y27 2003
DTB '
Order No.: P-B-82.60/215c
Supersedes: P-B-82.60/215b dated March 10, 2003
Group: 54
Revision: Procedure Updated
SUBJECT: Model 211.065/070/076 Model Year 2003
Intermittent Loss of Sound
If you receive customer reports in the above vehicles of the audio system having the following conditions with Audio Gateway (AGW) OTC code 0004 stored (control module was switched off due to excessive temperature), the AGW software may need to be updated.
. Intermittent audio
. Audio head unit locks up
" Audio head unit displays "black screen"
Software Update Procedure
1. Verify current AGW Hardware/Software version
Select the correct model Select Control Units
Select Information and communication
Select Audio, video, navigation and telematics
Select AGW - Audio Gateway (MOST network management, diagnosis gateway, radio tuner)
Select Control unit version
rn Note: AGW part number (listed as "MB object number for hardware and software") and SV'J status.
Software updating is possible on all AGW part numbers except 211 820 61 89 (Basic) or 211 820 62 89 (Logic 7 -Sound). If the vehicle is equipped with either of these, then the AGW must be replaced prior to the continuation of the software update procedure.
SW prior to 14/03 on eligible AGW's requires a software update.
If the AGW already has a software status 14/03 and a OTC 0004 is stored, please contact the Technical Assistance Center via authorized dealer personnel.
This bulletin has been created and maintained in accordance with MBUSA-SLP 5.1, Document and Data Control, and MBUSA-SLP 16.1, Control of Quality Records.
~. @ 2003 Mercedes-Benz USA, LLC. AJI rights reserved. Reproduction or translation In whole Mercedes-Benz Canada, Inc. or in part Is not permitted without authorization from the Dealer 'v\Ior1<shop Servl~$ publi$her. Printed in U.S.A. w.wI.MBUSA.com 1-800-FOR-MERCedes