CL600 Oxygen sensors (W215) - Mercedes-Benz Forum

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post #1 of 4 (permalink) Old 11-29-2010, 03:01 AM Thread Starter
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CL600 Oxygen sensors (W215)

Took my car to a Mercedes dealership who gave me a quote for a list of items as long as your arm and at a huge cost. So I've been shopping around for local garages for cheaper prices (with a reasonable amount of success) HOWEVER I've got stuck on one issue; the MB dealer quoted me for replacement of 4 oxygen sensors and a local garage quoted me for 8 oxygen sensors the big question is how many oxygen sensors do I have?
And if I have 8, would it not be advisable to replace all of them not just 4.
Thanks in advance.
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post #2 of 4 (permalink) Old 11-30-2010, 04:48 AM
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The dealer is probably correct. Check around on the W215 forum to make sure. Bosch says they are due to be replaced at 100,000 miles.

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post #3 of 4 (permalink) Old 11-30-2010, 08:15 AM Thread Starter
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I've checked around the forums and the general opinion is that there are 8 - 4 upstream and 4 downstream. I emailed my Mercedes dealership and they have still failed to response to my question. I'm currently at 84KM but I believe the reason they need replacing is because they may be damaged as a result of faulty sparks and ignition coils.
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post #4 of 4 (permalink) Old 11-30-2010, 08:58 AM
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Parts system (EPC) says four if your model is 215.376
Eight if 215.378

Kent Christensen
'07 GL320CDI
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