Rick's Free Auto Repair Advice

My Headlights won’t turn on

My Headlights won’t turn on, Horn goes off intermittently, Headlight turn on by themselvesTIPM

The Totally Integrated Power Module sits under the hood

Headlight turn on by themselves

If you own a Chrysler, Dodge, Ram, or Jeep product and have any of these symptoms:

• My Headlights won’t turn on
• Horn goes off intermittently
• Headlight turn on by themselves

You probably have a faulty totally integrated power module (TIPM)

In an effort to integrate electronics control in one place, Chrysler combined a fuse box and relay center into one unit. The TIPM works in conjunction with body control modules to turn relays on and off based on a digital signal from the body control modules. That eliminated a lot of extra wiring.

In these vehicles the switches, like the headlight, horn, etc, don’t actually switch power to the headlights or horn. Instead, they act like inputs to the body control module. When you turn on the headlights using the switch, the body control module see your headlight request and sends a digital signal to the TIPM. The TIPM then activates the headlight relay.

The problem is that this is an electronic unit with a circuit board and digital components and Chrysler simply didn’t do a good job of protecting it against the elements. So the circuit board and the electrical contacts are exposed to water and road salt. This eventually eats up the copper contacts or builds up surface contamination on the circuit board. Eventually it gets to the point where the headlights won’t turn on, or will turn on by themselves. Same with the horn or other electrical devices.

In the past you’d have to buy a new TIPM from the dealer. These units generally run around $500. However, Dorman Products now offer remanufactured units that can save you about $200. The best part is that they’re plug and play so you don’t have to do any reprogramming.

Dorman TIPM part numbers for the following vehicles:

Click on the link to get pricing

CHRYSLER

PT CRUISER 2008  #599-909
PT CRUISER: LIMITED 2009  #599-909
PT CRUISER: LIMITED 2008 #599-909
PT CRUISER: LX 2009 599-909
PT CRUISER: LX 2008 599-909
PT CRUISER: TOURING 2009 599-909
SEBRING 2008 599-917
SEBRING: LIMITED 2009 599-917
SEBRING: LIMITED 2008 599-917
SEBRING: LX 2009 599-917
SEBRING: TOURING 2009 599-917
SEBRING: TOURING 2008 599-917

DODGE

AVENGER: R/T 2008 599-917
AVENGER: R/T 2009 599-917
AVENGER: SE 2009 599-917
AVENGER: SE 2008 599-917
AVENGER: SXT 2009 599-917
AVENGER: SXT 2008 599-917
CALIBER: R/T 2007 599-906
CALIBER: SE 2007 599-906
CALIBER: SXT 2007 599-906

RAM

RAM 1500 PICKUP: LARAMIE 2006 599-923
RAM 1500 PICKUP: SLT 2006 599-923
RAM 1500 PICKUP: SPORT 2006 599-923
RAM 1500 PICKUP: ST 2006 599-923
RAM 1500 PICKUP: TRX4 2006 599-923
RAM 2500 PICKUP: LARAMIE, DIESEL* 2007 599-900
RAM 2500 PICKUP: LARAMIE, DIESEL* 2006 599-924
RAM 2500 PICKUP: SLT, DIESEL* 2007 599-900
RAM 2500 PICKUP: SLT, DIESEL* 2006 599-924
RAM 2500 PICKUP: SPORT, DIESEL* 2007 599-900
RAM 2500 PICKUP: SPORT, DIESEL* 2006 599-924
RAM 2500 PICKUP: ST, DIESEL* 2007 599-900
RAM 2500 PICKUP: ST, DIESEL* 2006 599-924
RAM 2500 PICKUP: TRX4, DIESEL* 2007 599-900
RAM 2500 PICKUP: TRX4, DIESEL* 2006 599-924
RAM 3500 PICKUP: LARAMIE, DIESEL 2006 599-924
RAM 3500 PICKUP: LARAMIE, DIESEL** 2007 599-900
RAM 3500 PICKUP: SLT, DIESEL* 2006 599-924
RAM 3500 PICKUP: SLT, DIESEL** 2007 599-900
RAM 3500 PICKUP: SPORT, DIESEL* 2006 599-924
RAM 3500 PICKUP: SPORT, DIESEL** 2007 599-900
RAM 3500 PICKUP: ST, DIESEL* 2006 599-924
RAM 3500 PICKUP: ST, DIESEL** 2007 599-900

Posted on by Rick Muscoplat



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