Won't Start in Hot Weather/Direct Sun - Mercedes-Benz Forum
 
LinkBack Thread Tools Display Modes
post #1 of 6 (permalink) Old 09-21-2016, 11:22 AM Thread Starter
BenzWorld Newbie
 
Date registered: Sep 2016
Vehicle: 2010 R 350
Location: connecticut
Posts: 2
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
Won't Start in Hot Weather/Direct Sun

I've read a bunch of posts on this subject, but there didn't seem to be a clear solution. Here is my situation:

1. Whenever the sun is directly on the car and the interior temp jumps, the car won't start. It doesn't turn over. The dash digital instrument lights come on, but they can go dark too. I can get the instrument lights to come back on by opening and closing the doors.

2. If we open all the doors and get cooler air flow inside the car, it will eventually start. We noticed that when the temp reading on the dash is around 83 or below, our chances improve. The air flow trick can take up to 30 minutes to work.

3. The car starts right up every morning because the cabin temp is low.

4. If I park the car in the shade and keep the windows open I am usually okay.

When it doesn't start, the engine doesn't turn over at all. It behaves just like a dead battery.

If anyone has figured this out and can help, I would be very grateful.
bumps44 is offline  
Sponsored Links
Advertisement
 
post #2 of 6 (permalink) Old 09-21-2016, 02:20 PM
BenzWorld Elite
 
Kajtek1's Avatar
 
Date registered: Dec 2005
Vehicle: E320/E250 Bluetec Ford F350 6.7l
Location: V E G A S
Posts: 35,215
Mentioned: 28 Post(s)
Quoted: 1935 Post(s)
Doesn't R have battery under passenger seat?
When cabin gets hot, the battery gets hot and batteries don't like excessive heat.
Then 83C is quite different from 83F, so would be nice if you could precise?
I would start with checking all electrical connections and next time check the voltage starting on battery prongs and ending on main fuse box terminal.
Welcome to the forum.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Kajtek1 is online now  
post #3 of 6 (permalink) Old 09-24-2016, 09:18 AM Thread Starter
BenzWorld Newbie
 
Date registered: Sep 2016
Vehicle: 2010 R 350
Location: connecticut
Posts: 2
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
I have an update, but still having problem:

1. The temp is 83F when the odds for starting improve. The battery is located under the drivers seat, so yes it is subjected to the high temps inside the car when the sun is beating down.

2. I read a number of posts that recommended changing the battery. Mine was the original that came with the car, so it was time for a change. I successfully did the swap this morning and it started right up. I let the car sit in the sun for an hour and unfortunately the car is behaving exactly as I described in my original post.

Any other suggestions?

Thanks!
bumps44 is offline  
Sponsored Links
Advertisement
 
post #4 of 6 (permalink) Old 09-25-2016, 01:36 PM
BenzWorld Junior Member
 
YuChem's Avatar
 
Date registered: Jul 2010
Vehicle: 2012 R350 BT
Location: Montreal, Canada
Posts: 44
Mentioned: 0 Post(s)
Quoted: 4 Post(s)
Send a message via MSN to YuChem
1. The battery is under the passenger seat, not driver seat.
2. There is a service menu to check main battery voltage. Try it in different conditions.
Quote:
1. Make the dashboard show the current speed (0 mph)
2. Press the odometer-reset button three times.

At this point the menu should show the battery voltage.
Try playing around with turning on lights or the ventilation and see how it affects the voltage.

To toggle the menu off, turn the key all the way back.
YuChem is offline  
post #5 of 6 (permalink) Old 04-26-2019, 09:14 AM
BenzWorld Newbie
 
Date registered: Apr 2019
Posts: 1
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Exclamation wont-start-hot-weather

Quote:
Originally Posted by YuChem View Post
1. The battery is under the passenger seat, not driver seat.
2. There is a service menu to check main battery voltage. Try it in different conditions.
A have te same problem with my W212, E class 2010. It won't start on sunny and hot days. I have to wait to fressh the air and low the temperature for some minutes to recognise the key and to start.

Please who has any idea or bumps 44 if reads to help me!
E Class 2010, w212 is offline  
post #6 of 6 (permalink) Old 05-06-2019, 07:28 AM
BenzWorld Elite
 
IWantedaJag's Avatar
 
Date registered: Jan 2014
Vehicle: 2008 AMG CLK63 Conv., 2012 R350 4-Matic, Wife's 2015 C300 sedan
Location: Cypress Texas
Posts: 8,187
Mentioned: 7 Post(s)
Quoted: 2454 Post(s)
Suggestions:

1. Leave the sunroof, very rear windows and or the main windows cracked open a little. That allows a little air to circulate and keep cabin temperatures down but thieves are unlikely to get in.

2. Buy a dash sunshade.

3. Move to Scotland.

4. Get the battery checked out, it could be on its last legs.

Oh Kajtec, you do realize 83 Celsius is 181 Fahrenheit, right? Highly unlikely even in the middle of the Sahara!

"Semper In excretio, solum profundum variat" - unknown
They called me mad, and I called them mad, and damn them, they outvoted me" - Nathaniel Lee
IWantedaJag is online now  
Sponsored Links
Advertisement
 
Reply

  Mercedes-Benz Forum > Mercedes-Benz Vans/Trucks/SUV/Others > W251 R-Class

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Mercedes-Benz Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 

Title goes here

close
video goes here
description goes here. Read Full Story
For the best viewing experience please update your browser to Google Chrome