moncalee Posted November 20, 2009 Share Posted November 20, 2009 I just got transfered to a 07 Mack Vision about a month ago and now there is a light coming on in the insturment pannel. Called the dealership and they are unsure what it is.... Anyone have any ideas? The truck is running fine, no issues. Just have no clue what the light means. Quote Link to comment Share on other sites More sharing options...
hatcity Posted November 21, 2009 Share Posted November 21, 2009 Electrical/Electronic malfunction. Best thing is bring to dealer, let them hook up computer. It will read the code and determine problem. OR, with cruise control off, press the set button. Bolt will flash in a series. Count flashes (like 8-3) IF you have the manual, it will tell problem. Or ask here. these guys can diagnose the problem and the fix.Too bad they wont come out and fix for yaBy the way- 1 Quote Success is only a stones throw away.................................................................for a Palestinian Link to comment Share on other sites More sharing options...
Underdog Posted November 22, 2009 Share Posted November 22, 2009 I just got transfered to a 07 Mack Vision about a month ago and now there is a light coming on in the insturment pannel. Called the dealership and they are unsure what it is.... Anyone have any ideas? The truck is running fine, no issues. Just have no clue what the light means.If your dealer didn't know what that light was all about, then you need to go to another dealer. I wouldn't trust them to work on the truck. Either they are clueless or they blew you off. Both would disqualify them from earning your business. 1 Quote Link to comment Share on other sites More sharing options...
Logistixx Posted November 27, 2010 Share Posted November 27, 2010 I just bought a 2005 Granite CV713, and my Lightning Bolt light comes on when under load. Took to Mack Dealer outside New Orleans, LA, and they put a computer on the truck that said it was a "humidity sensor". I agree with the prior posts... If your dealer cannot tell you what the problem is, the DEALER may be a problem. Either they really DO NOT know (which is not good), OR, they were blowing you off. Quote Steve ZLogistixx Transport, LLCPort of New Orleans, LA Link to comment Share on other sites More sharing options...
Bobby Covert Posted November 28, 2010 Share Posted November 28, 2010 Check the coolant level in both the upper reservoir and lower. One of the sensors may become exposed and trigger the lightning bolt. The bolt itself means electronic malfunction. Quote Link to comment Share on other sites More sharing options...
Merkk36 Posted August 23, 2016 Share Posted August 23, 2016 Could it cause break down in future Quote Link to comment Share on other sites More sharing options...
tjc transport Posted August 23, 2016 Share Posted August 23, 2016 it all depends what is making the light come on. Quote when you are up to your armpits in alligators, it is hard to remember you only came in to drain the swamp.. Link to comment Share on other sites More sharing options...
Merkk36 Posted August 23, 2016 Share Posted August 23, 2016 Do you think it's more intenal as in the engine. Quote Link to comment Share on other sites More sharing options...
tjc transport Posted August 24, 2016 Share Posted August 24, 2016 (edited) you need to get the code to know. without the code, it could be anything Edited August 24, 2016 by tjc transport Quote when you are up to your armpits in alligators, it is hard to remember you only came in to drain the swamp.. Link to comment Share on other sites More sharing options...
mackey58 Posted September 7, 2016 Share Posted September 7, 2016 My fuel gauge acts up and I get the lighting bolt the code says low fuel when it has 100 gal in the tank best to do the blink code check Quote Link to comment Share on other sites More sharing options...
BackRoadBlackSmoke Posted October 15, 2019 Share Posted October 15, 2019 It's funny the original question was asked in 2009 and there are people still answering him in 2016 as if he just asked it. Good stuff. That dude has probably already been through a dozen or more trucks since then. Quote Link to comment Share on other sites More sharing options...
Popular Post j hancock Posted October 16, 2019 Popular Post Share Posted October 16, 2019 The legend of the lightning bolt on modern trucks will live on forever! 2 2 Quote JimIt doesn't cost anything to pay attention. Link to comment Share on other sites More sharing options...
mrgumby Posted October 16, 2019 Share Posted October 16, 2019 Ka chow 1 Quote Link to comment Share on other sites More sharing options...
tjc transport Posted October 16, 2019 Share Posted October 16, 2019 maybe it means the truck is possessed by the spirit of harry potter. 1 Quote when you are up to your armpits in alligators, it is hard to remember you only came in to drain the swamp.. Link to comment Share on other sites More sharing options...
41chevy Posted October 17, 2019 Share Posted October 17, 2019 5 hours ago, tjc transport said: maybe it means the truck is possessed by the spirit of harry potter. Or Sven Van Potter Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment Share on other sites More sharing options...
Mack Technician Posted October 17, 2019 Share Posted October 17, 2019 On 10/15/2019 at 8:19 PM, j hancock said: The legend of the lightning bolt on modern trucks will live on forever! Agreed, its a modern Icon who determines how your day is going to go...……. You key up, it does it's "dash flash" bulb check, it goes out, you start the engine and then you stare at it hoping it doesn't come back on once the engines up 2 Quote Link to comment Share on other sites More sharing options...
Luckywrench Posted December 19, 2019 Share Posted December 19, 2019 I have one doing the same and only have 2.5 v going into trans harness. Bet it’s the controller on the dash Quote Link to comment Share on other sites More sharing options...
j_martell Posted December 22, 2019 Share Posted December 22, 2019 used to get the bolt daily in my Granite for the outside temp sensor (dash display) going out for a second...... PITA Quote Lack of planning on your part does not constitute an emergency on my part.... Link to comment Share on other sites More sharing options...
mackey58 Posted December 26, 2019 Share Posted December 26, 2019 Did you do the blink code using the cruise switches Quote Link to comment Share on other sites More sharing options...
tjc transport Posted December 26, 2019 Share Posted December 26, 2019 yup. cruise off, then hit the set/resume button down one time and count the flashes of the light. Quote when you are up to your armpits in alligators, it is hard to remember you only came in to drain the swamp.. Link to comment Share on other sites More sharing options...
Bullheaded Posted December 29, 2019 Share Posted December 29, 2019 The mass ground point inside dash on driver side A pillar. Clean and check your grounds. At least that's what it was on my 2000 CH when I used to have it. Always had the malfunction light coming on and off and the truck randomly shutting off and starting right back up while driving down the highway. Dealer never could figure it out. They changed all kinds of harnesses and ecm. Was just the mass ground. Found out many years later. Quote Link to comment Share on other sites More sharing options...
Jbird Posted July 2, 2022 Share Posted July 2, 2022 I have an 09 mack cxu613 mp8. I have a stop light and bolt on the dash. After I put it in 8th gear it slowly raises with little power empty. Does anyone have any ideas? The dpf button is flashing also but it doesn't work. Quote Link to comment Share on other sites More sharing options...
mowerman Posted July 3, 2022 Share Posted July 3, 2022 On our a Kenworth the lightning bolt means trailer ABS is not working Quote Link to comment Share on other sites More sharing options...
mowerman Posted July 3, 2022 Share Posted July 3, 2022 I understand it’s just a fuse Quote Link to comment Share on other sites More sharing options...
tjc transport Posted July 3, 2022 Share Posted July 3, 2022 On 7/1/2022 at 11:29 PM, Jbird said: I have an 09 mack cxu613 mp8. I have a stop light and bolt on the dash. After I put it in 8th gear it slowly raises with little power empty. Does anyone have any ideas? The dpf button is flashing also but it doesn't work. lightning bolt means there are diagnostic trouble codes in the computer. parking brake on, engine on, cruise control off. press cruise button down to resume and let go. count the flashes of the lightning bolt. it should give you a two number code. with that number, you can then find out what the problem is. 1 Quote when you are up to your armpits in alligators, it is hard to remember you only came in to drain the swamp.. Link to comment Share on other sites More sharing options...
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