E90Post
 


The Tire Rack
 
BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > 335i coolant leak and erratic electronics



Reply
 
Thread Tools Search this Thread
      12-01-2021, 05:34 PM   #1
TreyBinkley
New Member
0
Rep
8
Posts

Drives: Bmw 335i
Join Date: Jan 2020
Location: Chambersburg PA

iTrader: (0)

335i coolant leak and erratic electronics

Hey guys got a situation I need advice on. I have an 09 335i manual 2wd in good shape running jb4 with a few bolt ons. I left the car idling today in cool weather. Went inside to talk to someone and came out 1 hour later having totally forgotten my car was on. There was a puddle of coolant under the car and dash was lit like a Christmas tree. I let the car cool and found the coolant boiled over and came out the top of the overflow tank. I filled the now empty tank and then ran the bleeding procedure, refilled the tank, and reran the procedure. Now the car drive fine but proceeds to overheat quickly. My idrive display also turns itself on and off and my wipers run continuously without me being able to turn them off. I also got the following codes:
2e98 Generator
CD95 operation cruise control/ACC drive cruise control
2deb Power management2e82 electrical cooling pump switch off

for context you should also know my thermostat failed open about 2 weeks ago and Im waiting on the new one to come.


Any ideas?
Appreciate 0
      12-01-2021, 06:38 PM   #2
sine9
Enlisted Member
sine9's Avatar
United_States
26
Rep
43
Posts

Drives: 2012 BMW 335i (E92)
Join Date: Jan 2019
Location: West Palm Beach, FL

iTrader: (0)

I would probably check the electronics like fuses, battery, alternator, power regulator, etc. I know the voltage regulator is an issue on the E9Xs.
Appreciate 0
      12-01-2021, 06:54 PM   #3
TreyBinkley
New Member
0
Rep
8
Posts

Drives: Bmw 335i
Join Date: Jan 2020
Location: Chambersburg PA

iTrader: (0)

I have a Bavarian Technic setup. So I'll look into all of those systems and look for errors and codes. I do also know that 2e82 code said it is to protect water pump for over current. the pump clocked 18.1v just before it shut off at 96 Celsius.
Appreciate 0
      12-01-2021, 07:45 PM   #4
sine9
Enlisted Member
sine9's Avatar
United_States
26
Rep
43
Posts

Drives: 2012 BMW 335i (E92)
Join Date: Jan 2019
Location: West Palm Beach, FL

iTrader: (0)

Quote:
Originally Posted by TreyBinkley View Post
I have a Bavarian Technic setup. So I'll look into all of those systems and look for errors and codes. I do also know that 2e82 code said it is to protect water pump for over current. the pump clocked 18.1v just before it shut off at 96 Celsius.
Yeah, it sounds like the regulator might have given up. Usually start/stop deactivation and or cruise control (even adaptive cruise models) disable when an electrical issue is present.
Appreciate 0
      12-01-2021, 08:57 PM   #5
TreyBinkley
New Member
0
Rep
8
Posts

Drives: Bmw 335i
Join Date: Jan 2020
Location: Chambersburg PA

iTrader: (0)

Quote:
Originally Posted by sine9 View Post
Yeah, it sounds like the regulator might have given up. Usually start/stop deactivation and or cruise control (even adaptive cruise models) disable when an electrical issue is present.
I appreciate the help a lot. Further analysis shows numerous systems on the car throwing some over voltage code in the range of 17-18v. Only option at that point is regulator. Ordered a new Bosch one with 2 day shipping. Once I install I will report back findings.
Appreciate 0
      12-01-2021, 09:28 PM   #6
sine9
Enlisted Member
sine9's Avatar
United_States
26
Rep
43
Posts

Drives: 2012 BMW 335i (E92)
Join Date: Jan 2019
Location: West Palm Beach, FL

iTrader: (0)

Quote:
Originally Posted by TreyBinkley View Post
Quote:
Originally Posted by sine9 View Post
Yeah, it sounds like the regulator might have given up. Usually start/stop deactivation and or cruise control (even adaptive cruise models) disable when an electrical issue is present.
I appreciate the help a lot. Further analysis shows numerous systems on the car throwing some over voltage code in the range of 17-18v. Only option at that point is regulator. Ordered a new Bosch one with 2 day shipping. Once I install I will report back findings.
Yeah that would be awesome, a lot of people look on here whenever they have a similar issue. Crazy how a little plastic part with a chipset can throw an entire vehicle off these days…
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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



All times are GMT -5. The time now is 09:44 AM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST