Parking sensor issue?
Thread Starter
Super Member
Joined: Jul 2012
Posts: 737
Likes: 60
From: HESPERIA CA
2011 E550
Parking sensor issue?
Hi guys, so my CLS is having an issue where if it stays off for like a day or two, when I start the car up the Parktronic lights up two red dots in the front and back and turns off. However if i restart the car, it all goes back to normal and all the sensors will work. Could this be a faulty sensor? And if it is, would it be covered under the CPO warranty, since my 4 year is up.
Member
Joined: Dec 2012
Posts: 88
Likes: 4
cls550
Not sure if this gremlin is from the same cause but there's an 'accessory'' battery that starts to go bad which can cause all manner of parking sensor issues. DAMHIK. Don't know where the battery is located but after changing multiple sensors, dash unit, etc my parking sensor problems were solved when that battery was replaced.
Good luck.
Good luck.
Thread Starter
Super Member
Joined: Jul 2012
Posts: 737
Likes: 60
From: HESPERIA CA
2011 E550
Originally Posted by konigstiger
CPO should cover repair.
Last edited by bob2011; Nov 21, 2018 at 06:16 PM.
Thread Starter
Super Member
Joined: Jul 2012
Posts: 737
Likes: 60
From: HESPERIA CA
2011 E550
Originally Posted by kaetamer
Not sure if this gremlin is from the same cause but there's an 'accessory'' battery that starts to go bad which can cause all manner of parking sensor issues. DAMHIK. Don't know where the battery is located but after changing multiple sensors, dash unit, etc my parking sensor problems were solved when that battery was replaced.
Good luck.
Good luck.
Thread Starter
Super Member
Joined: Jul 2012
Posts: 737
Likes: 60
From: HESPERIA CA
2011 E550
Originally Posted by KEY08
Every time I have had a Parktronic sensor go bad that is what happens. Could be a lose connection too. Diagnostic should find and isolate the culprit. Replace and good to go.
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Thread Starter
Super Member
Joined: Jul 2012
Posts: 737
Likes: 60
From: HESPERIA CA
2011 E550
Originally Posted by Poomobile
I have had this problem with my 2016 since day 1. Nobody has ever been able to fix it. Been to the shop many times. Just restart car when it happens...
Senior Member
Joined: Nov 2012
Posts: 366
Likes: 104
E63 S AMG, CLS550 4matic, C63 Ed 507, Volvo XC90 T8s
I have had the same problem, usually when the car sits for a few days in cold temperatures. I am now trying to leave the car on a battery tender to see if things get better through the winter. In summer, I never had any such problems even though the car was not hooked up to a battery tender.
Thread Starter
Super Member
Joined: Jul 2012
Posts: 737
Likes: 60
From: HESPERIA CA
2011 E550
Originally Posted by OBP
I have had the same problem, usually when the car sits for a few days in cold temperatures. I am now trying to leave the car on a battery tender to see if things get better through the winter. In summer, I never had any such problems even though the car was not hooked up to a battery tender.
Member
Joined: Feb 2012
Posts: 93
Likes: 3
2010 E550 4Matic sold, 2015 CLS 550 sold, 2016 CLS 550
Mine kicked out a few codes. They did an update. Made no difference. I find it happens almost only in my garage. Sometimes after a wash or cold. I think it has an issue at startup if you're parked close to something. Never happened outside my garage...
Senior Member
Joined: Nov 2012
Posts: 366
Likes: 104
E63 S AMG, CLS550 4matic, C63 Ed 507, Volvo XC90 T8s
Update: left CLS on a battery tender for a week, then started car up and no errors with Parktronic. Been quite cold here in NJ. Let's see if the trend continues through the winter. I suspect Parktronic wants the battery to be in top shape or it will throw an error.
Member
Joined: Mar 2003
Posts: 107
Likes: 1
I've had issues with my front parking sensors with everything described in this thread and originally thought to be faulty sensors. However, all of which went away after replacing main battery in under the hood.
Thanks.
Thanks.
Senior Member
Joined: Sep 2002
Posts: 352
Likes: 12
From: Worcester, MA
15' CLS400
I've got a different issue... All was fine, then I went through a car wash. Since then the front left sensors have been real sensitive, even go off when there's nothing in front of me. Last week it warmed up here and the issue went away... This week its real cold and its back. I have no codes and the lights do NOT light up red when the car is stared. Anything I can do other than wait for it to get warm?
Update: I took a closer look at the sensors (just looking at the bumper) and one of them appears to be missing the small plastic spacer ring around it. Is it possible this ring could have fallen out and could it affect performance? If it can fall out then id assume a new one can snap right in. Part #0005421251
Update: I took a closer look at the sensors (just looking at the bumper) and one of them appears to be missing the small plastic spacer ring around it. Is it possible this ring could have fallen out and could it affect performance? If it can fall out then id assume a new one can snap right in. Part #0005421251
Last edited by TechSuperstar; Feb 2, 2019 at 10:09 AM.
