Rear Light Issues - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Grand Cherokee & Commander Forums > WK Grand Cherokee & XK Commander Forum > Rear Light Issues

Savvy/Currie Aluminum Control ArmsRockridge 4WD IS Taking Zone Offroad Suspension Lift Kits ZONE 4.25" combo lift for TJ available at Rockridge4w

Reply
Unread 12-14-2014, 04:12 PM   #1
nilsh32
Registered User
 
Join Date: Dec 2014
Location: Gloucester, MA
Posts: 4
Rear Light Issues

Hey all,

My dad has a 2010 Jeep Commander that I am helping him sort issues out with.

As I understand, there are two brake light bulbs per housing, and each is a double filament bulb so that when the headlights are on they are at low brightness and when the brake is depressed they are high brightness.

The third tail light works fine.

The top bulb on LH and RH assembly works when the brake pedal is depressed, but not the bottom bulbs on each assembly.

When the brake light is not depressed but the headlights are on, the low light filaments in both RH brake bulbs work, but nothing lights up on the left hand assembly.

In addition, the reverse lights on both LH and RH assemblies do not work.

I replaced all 6 bulbs today with no change. What gives?

Thanks!
Nils

nilsh32 is offline   Reply With Quote Quick reply to this message
Unread 12-14-2014, 05:09 PM   #2
marka2k
Member
 
marka2k's Avatar
2006 WK 
 
Join Date: Dec 2011
Location: Tulsa, Ok
Posts: 454
Were the bulbs themselves actually bad?
The bottom if I remember correctly are turn signals (someone correct me if I am wrong please)
Check the fuses and go from there.
__________________
Looking to purchase 2 BT Catch Cans PM if you have one or two for sale.

Silver WK Club #46
06 WK Overland
MyGiG RER
OEM Parkview Rear Camera
4xGuard Matrix
4XGuard Front Skid
4XGuard Rock Rails
HID Projector
2" Lift

04 TJ Rubicon Silver
Rokmen Fuel Tank Skid
Rokmen Front Skid
Rokmen Tummy Tuck
Novak Shifter
Ground Pounder Fab Front Bumper
Warn M8000 Winch
marka2k is offline   Reply With Quote Quick reply to this message
Unread 12-14-2014, 05:45 PM   #3
nilsh32
Registered User
 
Join Date: Dec 2014
Location: Gloucester, MA
Posts: 4
Upon visual inspection the fuses look fine. Tomorrow I will try swapping out with a spare to see if it fixes anything but I doubt it is the fuses anyway as some of the lights work. I checked the three red 10 amp ones in the forward most box under the hood.

I replaced the bulbs without checking the previous bulbs, I assumed bulbs were the problem
nilsh32 is offline   Reply With Quote Quick reply to this message
Unread 12-15-2014, 05:37 AM   #4
Nejeep
Registered User
 
Join Date: Jun 2006
Location: Lincoln, NE
Posts: 455
When you have symptoms like your rear lights, its often a grounding problem. When one circuit is off then the other lights work because the current can flow to ground thru the unused circuit. If both circuits (brake and tail) are on and the ground is bad then it no longer has a path to ground. You will need to look for damaged wires, dirty connectors, loose ground wires etc.

FYI the tail lights have separate fuses for left and right plus a relay in the underhood fuse box. Here is a link that may be helpful http://www.wkjeeps.com/wk_fuses.htm#PDC08
__________________
06 Laredo - 4x4 V6 - Stone White - Custom LED Cargo Area Lights, Lighted Visors Added - now at 49k miles

97 Laredo - 4.0 4x4 Daily driver for 8 years then relocated to Arizona for 6 more years with the relatives
Nejeep is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the JeepForum.com 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 e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Thread Tools






Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.