Hi,

I’m new to the forum so bear with me. I’m stuck with a car with the immobilizer engaged amongst other electrical issue and I have no idea where to start. I have it booked in with a specialist but I’d like to at least try and rule out a few things before it goes in to save a few quid. You will see why below....

It started randomly with an engine management light coming on after working perfectly fine, then when I parked up the car locked itself in park, then after getting it home the immobilizer kicked in and wouldn’t start. 

Any ideas on what the failure could be? Any recommendations on where to start? Either the ABS module or the instrument cluster have been mentioned as potential causes but I'm not sure if there is any basis for the suggestions. 

A friend read the error codes and here is what popped up. Many are duplicated though each of the modules: 

Engine

P0504-71 - Brake switch actuator A/B stuck

P2038-00 - Throttle pedal position sensor D voltage correlation 

U0415-86 - ABS control module invalid data received 

U0418-08 - Brake system control module invalid data received 

U0129-00 - lost communication Brake system control module

P2121-00 - Throttle pedal position sensor D circuit range

U0129-87 - lost communication Brake system control module - missing message

Transmission 

U0121-00 - lost communication ABS control module

Body Control Module

C1120-15 - Reversing lamp short to battery

B10A2-02 - Crash input signal failure

B10A2-15 - Crash input circuit short to battery

B10AE-13 - Positive temp coefficient heater - open circuit 

U0121-00 - lost communication ABS control module

U0452-00 - invalid data received restraint control module 

U0452-62 - invalid data received restraint control module - signal compare failure 

U3000-04 - control module system internal failure 

Electronic Power Steering 

U0129-00 - lost communication Brake system control module

Tire pressure monitoring system

C1120-15 - Reversing lamp short to battery

B10A2-02 - Crash input signal failure

B10A2-15 - Crash input circuit short to battery

B10AE-13 - Positive temp coefficient heater - open circuit 

U0121-00 - lost communication ABS control module

U0452-00 - invalid data received restraint control module 

U0452-62 - invalid data received restraint control module - signal compare failure 

U3000-04 - control module system internal failure 

Electronic air temp control

B105A-14 - Cabin temp sensor fan - short circuit to ground

B1A69-14 - humidity sensor circuit - circuit short to ground

Instrument Panel

U0151-00 - lost communication with restraint control unit

U0422-68 - Invalid data received body control module - Event info

U0415-68 - Invalid data received body control module - Event info

Parking aid

U0422-00 - invalid data received body control module

Immobilizer

C1120-15 - Reversing lamp short to battery

B10A2-02 - Crash input signal failure

B10A2-15 - Crash input circuit short to battery

B10AE-13 - Positive temp coefficient heater - open circuit 

U0121-00 - lost communication ABS control module

U0452-00 - invalid data received restraint control module 

U0452-62 - invalid data received restraint control module - signal compare failure 

U3000-04 - control module system internal failure 

OBDII

U0415 - Invalid data received ABS control module

Could be faulty cluster solders

32 minutes ago, DaveT70 said:

Could be faulty cluster solders

Wasn't aware if they occurred in such a late model as a 2013 year. However, just in case...

 

Starting with the basic of the basics. What it the battery terminal voltage measured with a multimeter one hour after the car is parked ?

If it is more than 12.2V then you need to remove and inspect the Body Control Module (BCM). Look for signs of water ingress and/or greenish corrosion of the connectors and plugs.

 

Thanks.

6 hours ago, DaveT70 said:

Could be faulty cluster solders

Thanks. I'll give it a shot and see if it makes any difference

5 hours ago, StephenFord said:

Wasn't aware if they occurred in such a late model as a 2013 year. However, just in case...

 

Thanks. These will be helpful! Seems simple enough to remove and the guy on ebay seems to have plenty of experience with these clusters. 

3 hours ago, unofix said:

Starting with the basic of the basics. What it the battery terminal voltage measured with a multimeter one hour after the car is parked ?

If it is more than 12.2V then you need to remove and inspect the Body Control Module (BCM). Look for signs of water ingress and/or greenish corrosion of the connectors and plugs.

 

The car has been sat for a month over Christmas so I'm unable to check. I believe the BCM is behind the glovebox like the C-max? 

Unless your battery is very low, of course

11 hours ago, Slacky70mx said:

The car has been sat for a month over Christmas so I'm unable to check. I believe the BCM is behind the glovebox like the C-max? 

Unless you own a Toyota, it's unwise to neglect a Ford for this length of time as the battery won't cope. (Mums 22 year old Toyota Yaris was left abandoned 4 months over lockdown, and started 1st twist of the key)

On 1/11/2024 at 12:16 PM, unofix said:

Starting with the basic of the basics. What it the battery terminal voltage measured with a multimeter one hour after the car is parked ?

If it is more than 12.2V then you need to remove and inspect the Body Control Module (BCM). Look for signs of water ingress and/or greenish corrosion of the connectors and plugs.

 

The BCM looks to be in a decent state. No water ingress or corrosion. 

On 1/12/2024 at 4:11 AM, StephenFord said:

Unless you own a Toyota, it's unwise to neglect a Ford for this length of time as the battery won't cope. (Mums 22 year old Toyota Yaris was left abandoned 4 months over lockdown, and started 1st twist of the key)

The battery is still in a decent state. Its been fully charged today

On 1/12/2024 at 3:01 AM, DaveT70 said:

Unless your battery is very low, of course

The soldering looks fine and nothing seems to be loose

6 minutes ago, Slacky70mx said:

The battery is still in a decent state.

I'm curious what your definition of, 'a decent state' is?

7 minutes ago, StephenFord said:

I'm curious what your definition of, 'a decent state' is?

75% charged when it was connected to the charger.