BMW E39 NAVCODER LIGHT CHECKMODULE UPGRADE
BMW E39 NAVCODER LIGHT CHECKMODULE CODE

BMW E39 NAVCODER LIGHT CHECKMODULE UPGRADE

If you get to the instrument cluster and find parts of it fried, it may still be salvageable - but better check back, for there are some non-trivial tricks that yu need to be aware of.In this article, I discuss in detail the steps, hardware, and software required to upgrade your BMWвЂ™s navigation computer, display, software, and maps. In his case, those were fuel senders, high beam, fog light and turn indicators. Being hardware engineer, he promptly soldered everything - and got away without replacing the instrument cluster.ДЄll this sounds far fetched, but I'd check the fuel pump/sender connector, just in case - this is E39, not E46, so no telling what circuits would be affected. Some traces were just hanging in the air, some came unsoldered. Plastic around fuel pump power pins on the fuel pump/sender connector was melted.ДЄlso was fried the part of the instrument cluster PCB where the wires from the fuel sender were coming in (unfortunately, he forgot to take a picture).

The root cause turned out to be shorting out of the fuel pump power circuit to fuel sender circuit. Seen something similar on my friend's E46 a few months ago. Having owned a few British cars years ago, I am a little sensitive to intermittent problems with automobile electrical systems. Question #3: If it is not the LCM, what other items should I check?

BMW E39 NAVCODER LIGHT CHECKMODULE CODE

Question #2: If it is the LCM, can I replace it myself and does some code in the car's computer system need to be re-set by a BMW dealer at the time the LCM is replaced? (I read something on another on-line DIY link that said a dealer had to 'validate' or 'initialize' a new LCM to the car or the car's computer would have some type of permanent error code, like a new odometer!?!) Question #1: Does the chain of events I have described (intermittent flasher problems and dead alternator) sound indicative of a bad LCM? He visually checked the battery and a few items under the hood, found no problems, pronounced the car ok and said I should just keep an eye on it, and sent me on my way. He plugged into the car's diagnostic system and ran a check for error codes and found none. When I described the symptoms with the strange turn signal/emergency flasher incident, he thought it could be the Light Control Module (LCM) and he briefly speculated that a bad LCM 'could have taken out' the alternator. So on my way back from lunch I stopped by my mechanic's shop. But, I swear I think the pixels in the instrument cluster were 'pulsing' (glowing brighter, then slightly dimmer) at the same cadence as the blinkers would normally flash!?! Then the lights all started working again (and the dash pixels stopped 'pulsing') a half mile later, before I turned off the car. This time, though, I had no turn signals (on the dash or outside) nor emergency flashers. The next day, my turn signals (and emergency flashers) stopped working during a 2 mile trip to lunch. My indie BMW shop replaced the alternator with a remanufactured Bosch unit, replaced the related pulleys, tensionors, etc and the car ran fine. The turn signals all started working again after a few miles.

Symptoms: While driving my car about 6 weeks ago, I noticed that my turn signals were not 'blinking' on the dashboard, but the turn signals were on (and not blinking) on the exterior of my car.

Bmw e39 navcoder light checkmodule