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#1
12-25-2005, 07:28 AM
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W210 Electrical Gremlin
My 96 E320 with 71K has starting intermittedly displaying a dim SRS light the last week or so and, less frequently, the factory radio will stop playing. I think I saw the SRS light "flash" when I noticed the radio glitch.
A search of this site suggested a failing voltage regulator - I checked battery voltage with the car off and got 12.46 volts and 14.02 at cold idle, so I've tentatively ruled out the regulator. While running, I was able to check the voltage with a dim SRS light and then I restarted the car and the SRS light was out and the battery voltage was the same both times - 14.02. In viewing the alternator from underneath I note it is a Valeo and not a Bosch. The car has not left me stranded, i.e., the battery has never been flat. Any thoughts where I should next look? The only other electrical issue I've ever had was about 18 mos ago the SRS came on and stayed on. I had it analyzed at an indie I trust and they could not find anything - reset and the problem never came back. If it is something like a regulatator, will I be able to change it out easily as with a Bosch alternator? Appreciate any wise guidance or thoughts you can share. Cheers, Denny
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SocksE420 97 SL500 74K 96 C280 110K(SOLD) 96 E320 111K(SOLD) 95 E420 107K(SOLD) 88 300TE 142K(SOLD) 77 300 D 144K(SOLD) 
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#3
12-25-2005, 03:09 PM
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Thanks for responding so quickly - on Christmas no less!
Funny you should mention the ignition switch - this morning it was raining cats & dogs and initially the windshield wipers would not work - period. Turned off the car and re-started the car and everything was fine. Is there is a recommended diagnosis for the switch? Is this much of a chore to replace or is it better left to the professionals? Cheers, Denny
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SocksE420 97 SL500 74K 96 C280 110K(SOLD) 96 E320 111K(SOLD) 95 E420 107K(SOLD) 88 300TE 142K(SOLD) 77 300 D 144K(SOLD)
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#4
12-27-2005, 08:26 AM
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Replacement of the ignition switch takes about 1.5 hr at dealer & requires 1 special tool.
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MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator
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#5
12-27-2005, 07:34 PM
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Thanks MB DOC - one final question - is this just a fluke (doesn't sound like it) and can I expect the new switch to last any longer than the original (had a similar issue with the wipers at around 44K but then it didn't act up for 27K later.
Cheers, Socks E420
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SocksE420 97 SL500 74K 96 C280 110K(SOLD) 96 E320 111K(SOLD) 95 E420 107K(SOLD) 88 300TE 142K(SOLD) 77 300 D 144K(SOLD)
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