Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here! ZJ (93-98), WJ (99-04), WK (05+)
All ZJ/WJ/WK specific tech questions asked here!

Headlights flash on automatic!

Old 01-13-2019, 01:27 PM
  #1  
Newbie
Thread Starter
 
Join Date: May 2013
Location: Blacksburg, VA
Posts: 22
Year: 1998
Model: Grand Cherokee
Engine: 5.9
Default Headlights flash on automatic!

I have a 1998 Grand Cherokee 5.9, with all the good stuff, including automatic headlights. Recently when they come on, they've started flashing, alternating with the dashboard lights. That is, the headlights go off, and the dash lights go on, then the headlights go on while the dash lights go off. It happens rapidly, at a pace similar to police flashers. I can only wonder what passing motorists think.

When you flip the switch to "On" all the time, it quits. Last night I experimented while driving around. Sometimes when I switched it to automatic, it would behave, but only for a little while.

I vaguely recall chancing out the headlight switch once, but it's been a couple of years ago, at least. Still, I'm a little puzzled that it would go bad…again?

Suggestions? Time for another switch, or should be looking elsewhere?

Thomas

P.S. I'm only 400 miles from 200k! Wish me luck!
tleed is offline  
Old 03-15-2019, 06:53 PM
  #2  
Newbie
Thread Starter
 
Join Date: May 2013
Location: Blacksburg, VA
Posts: 22
Year: 1998
Model: Grand Cherokee
Engine: 5.9
Default

I'm well over 200k now, but the headlights still flash on automatic. I know using Rock Auto to diagnose vehicle malfunctions is a poor method, but I looked up parts there and discovered an Automatic Headlamp Control Relay and a Multi-Function Relay.

I looked them up because I've discovered that when the headlights are flashing (on the automatic setting) there's a loud clicking coming from under the dashboard above and to the left of the front passenger's feet. Is there a relay under there that's gone bad? Could that be my Automatic Headlamp Control Relay? A new one is only $5. I'd almost be ashamed to "just throw money at" the problem, but five bucks is way cheaper than an hour of diagnostic time with a mechanic, or a community college course in auto electrical theory and diagnosis.

Thomas
tleed is offline  
Old 03-16-2019, 02:47 PM
  #3  
CF Veteran
 
Join Date: Nov 2015
Location: syracuse ny
Posts: 1,543
Year: 1997
Model: Grand Cherokee
Engine: 4.0
Default

If you have the fuse block to the right of the passenger foot well like I do in the 4.0, you might want to examine it for green funk oozing from the connectors on the bottom. I got a new one at the bone yard for $15. Still have the old one, it was so corroded from a leak by the wheel well that the layers of it were separating.
97grand4.0 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
dtrain
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
3
09-29-2014 06:05 PM
assetts91
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
32
01-26-2013 03:26 AM
MisAdventure
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
0
05-25-2011 07:24 AM
hdsixhundred
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
16
01-31-2011 10:27 PM
purplexj
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
2
11-04-2009 11:06 AM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Quick Reply: Headlights flash on automatic!


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description: