Multiple "inoperable failures" QX30 in limp mode

1530 Views 3 Replies 4 Participants Last post by JeyMe, 8 mo ago

parthtc09

Discussion Starter · May 25, 2022

Hi all,

Last week my 19 QX30 went into limp mode, with the MFD showing :
Emergency Brake Inoperative
Inoperative See Owners Manual with abt ABS and car swervy icon
Park Assist Inoperative
Service Required Do Not Shift Gears Visit Dealer
Tire Pressure Monitor Inoperative
Parking Brake see owners manual SRS malfunction service required

This along with all lights on the gouge cluster lit up, the RPM, and engine temp levels erratically moving.

Had it towed to the dealer, stumped the main tech, and the master tech, they stated there was a fault code for the left headlight of which i was quoted of 3k to replace, with the car being in warranty. I did have LED headlight bulbs installed, which were working with no issues even at the time of the issue above. They were stumped until they saw the LED headlights and immediately went with it no proper reasoning or anything given just that its an aftermarket part this is what's causing it. When i know for a fact the headlights were perfectly fine, as i have used them in my other vehicles for years with no issues. Anyone else have issues like this before?

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p07r0457

· #2 · May 26, 2022

It is probably not related to your headlights, but I’d remove the LEDs and put the OE lamps back in just to confirm and remove that scapegoat from the equation.

A battery that’s going bad can cause issues like this. I’d get both batteries tested (one under hood, and one in passenger footwell).

There have also been a few defective ECUs that caused erratic “Christmas tree” dash conditions.

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michaelwebb860

· #3 · 8 mo ago

parthtc09 said:
Hi all, Last week my 19 QX30 went into limp mode, with the MFD showing : Emergency Brake Inoperative Inoperative See Owners Manual with abt ABS and car swervy icon Park Assist Inoperative Service Required Do Not Shift Gears Visit Dealer Tire Pressure Monitor Inoperative Parking Brake see owners manual SRS malfunction service required This along with all lights on the gouge cluster lit up, the RPM, and engine temp levels erratically moving. Had it towed to the dealer, stumped the main tech, and the master tech, they stated there was a fault code for the left headlight of which i was quoted of 3k to replace, with the car being in warranty. I did have LED headlight bulbs installed, which were working with no issues even at the time of the issue above. They were stumped until they saw the LED headlights and immediately went with it no proper reasoning or anything given just that its an aftermarket part this is what's causing it. When i know for a fact the headlights were perfectly fine, as i have used them in my other vehicles for years with no issues. Anyone else have issues like this before?

Yes that definitely not the problem there’s wiring issues along with the control module plus numerous other things took them **** near half the year and 5 visits to fix the problem they actually needed a regional specialists to fix it… at work at the moment but when I’m home I’ll get the exact details for you

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JeyMe

· #4 · 8 mo ago

easy-peasy

two main can-net connectors.
One exactly under the dashboard (You can try to find it with the left side revision gap in dash), other under the gear shifter console (need to take off all plastic) - one of them jumped out. ECU doesn`t seen part of the inner net and panic of all this.
One more thing to check - while of this disconnect - check the both lines to ECU - one of mine contact wires where fired a little while of lose connection.
If Yes - one of the way to fix - open the ECU and check for the nets inside, one of the controllers You will find dead. Other - change full ECU.
Also be shure that main battery is off while You'll doing all this procedures.
best regards

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