2004 C320 4Matic
Shortly after leaving the dealership (3 hour drive at 70mph) I slowed to about 35 mph. Just as I slowed the check engine light came on. I did fill up with premium (91 octane) fuel and was very careful about tightening the fuel cap. I tried starting the engine 4 times in a row as stated in the manual but the light remains on. I'm wondering if this could be related to the ticking noise.
The other thing I noticed was a considerable amount of road noise. Seems like a whirring noise from wheel bearings but I've never owned an AWD vehicle before so I'm wondering if the drivetrain is just going to be that lound.
Thanks in advance!
Last edited by Sportstick; Sep 16, 2012 at 11:37 PM.
Shortly after leaving the dealership (3 hour drive at 70mph) I slowed to about 35 mph. Just as I slowed the check engine light came on. I did fill up with premium (91 octane) fuel and was very careful about tightening the fuel cap. I tried starting the engine 4 times in a row as stated in the manual but the light remains on. I'm wondering if this could be related to the ticking noise.
The other thing I noticed was a considerable amount of road noise. Seems like a whirring noise from wheel bearings but I've never owned an AWD vehicle before so I'm wondering if the drivetrain is just going to be that lound.
Thanks in advance!
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Shortly after leaving the dealership (3 hour drive at 70mph) I slowed to about 35 mph. Just as I slowed the check engine light came on. I did fill up with premium (91 octane) fuel and was very careful about tightening the fuel cap. I tried starting the engine 4 times in a row as stated in the manual but the light remains on. I'm wondering if this could be related to the ticking noise.
The other thing I noticed was a considerable amount of road noise. Seems like a whirring noise from wheel bearings but I've never owned an AWD vehicle before so I'm wondering if the drivetrain is just going to be that lound.
Thanks in advance!



