I *think* the $150 iCarsoft can see these switches in real time down in some menu so you can see if they are actually activating, and maybe see the shift selector state to understand what it is thinking.  It might not necessarily throw a code since it is not really "failed" in the sense it out of the system, just not activating.

Again, if you spend some few thousands of $$ on one of these newer cars, do yourself a favor and spend the $150 so you can deal with this kind of thing without having to deal with a mech who knows nothing about your car other than what the computer is telling zat. You will thank me, you're welcome.

--FT

On 1/14/21 1:58 PM, Dan Penoff via Mercedes wrote:
Good guess, Rick. That’s a likely candidate.

I don’t know about the later models, but as Rick described, brake light 
switches are cheap as wine for W210s and earlier, possibly later models as 
well. While I doubt Wilton or Mrs. Wilton would be flexible enough to replace 
one, it can’t be a terribly expensive job at the dealer or shop. It’s not hard 
to do, but involves having to get under the driver’s side dash, which even for 
us younger folks isn’t easy.

Good to hear from you, Wilton! I was thinking of you recently while watching 
the Ken Burns documentaries on Vietnam.

-D

On Jan 14, 2021, at 1:49 PM, Rick Knoble via Mercedes <mercedes@okiebenz.com> 
wrote:

Glad to see you Wilton!
Brake switch malfunction. I had the same issue on my W210. There should be a 
way to override that. I will post what I find. BTW, the brake light switch was 
about $20 full price from the dealer for my car.


Rick

From: mercedes@okiebenz.com
Sent: January 14, 2021 12:43 PM
To: mercedes@okiebenz.com
Reply-to: wilt...@nc.rr.com; mercedes@okiebenz.com
Cc: wilt...@nc.rr.com
Subject: [MBZ] 07 E320 Blutec (92 KMI) sticks in PARK



        Intermittently, we're having trouble getting my 07 E320 Bluetec out
of PARK..

        Car not parked on slope.

        So far, we're able to try several times (holding brake, working shift
lever, etc.to get it to work normally). Can NOT feel any binding.

        MB tech checked system coupla weeks ago. Unable to find prob.

        Suggestions?

        Wilton
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--
--FT


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