Park brake, cruise control, and remote locking issues - Electrical (Mk4 Mondeo) - TalkFord.com

Jump to content

TalkFord.com uses cookies. Read the Privacy Policy for more info. To remove this message, please click the button to the right:    I accept the use of cookies

TalkFord Gold Members Don't See Adverts! Subscribe Today To Hide This Advert!

News Feed (View All Updates)



Photo

Park brake, cruise control, and remote locking issues


  • Please log in to reply
3 replies to this topic

#1 Pat

Pat

    Just Joined TF!

  • Members
  • 2 posts
  • Vehicle Driven:Mondeo MK4

Posted 09 April 2020 - 11:40 PM

As per the title my 2011 Mondeo estate suddenly developed a few issues - all at the same time.

 

I got a warning message on the dash saying my park brake was on (it wasn't), then shortly afterwards noticed that the cruise control won't engage (it activates, but won't engage), and the remote locking also stopped working (worked perfectly before this and will still unlock remotely). Intermittantly I now also get an 'engine malfunction' warning on the dash.

 

Forscan showed a few errors which I cleared (not sure if I wrote them all down at the time):

 

Code: U0402 - Invalid Data Received from TCM

Code: U0416 - Invalid Data Received From Vehicle Dynamics Control Module

Code: U0140 - Lost Communication With Body Control Module

Code: C1A54 - Park Brake Activation

 

After clearing the codes some came back, and I think some new ones too.

 

Code: P0571 - Brake Switch A Circuit

Code: P1464 - A/c demand out of self test range

Code: P1703 - Brake switch out of test range

Code: U0140 - Lost communication with body control module

Code: C1A54 - Park Brake Activation

Code: U0422 - Invalid Data Received From Vehicle Dynamics Control Module

Code: U0416 - Invalid Data Received From Vehicle Dynamics Control Module

 

 

Given the cruise and handbrake messages I'm guessing its to do with signals from the brakes somehow.

 

 

So far I've done the following:

- Checked the voltage (12.4v so slightly low and new battery ordered),

- Fuses/relays in all 3 compartments are OK,

- All wheels off and no obvious damage to wiring, 

- Brake fluid level is good,

- Handbrake switch tested OK (also tried driving with it disconnected it / shorted to ground),

- Foot brake pedal switch tested OK.

 

Now I'm stuck, and could really use some help please... what else should I be looking at!

 

Thanks in advance for your suggestions



#2 mike4369

mike4369

    Big Megger

  • Members
  • 2937 posts
  • Vehicle Driven:2014 C Max 1.6TDCi
  • Name:Mike
  • Location:Brecon

Posted 10 April 2020 - 09:34 AM

Try the reset system method (have the radio code handy if needed) by disconnecting the battery negative lead (on the bulkhead) and leave off for 10mins. Reconnect and see if it has cleared the problem. Maybe a shot in the dark but nothing to lose by trying.



#3 Speedlimit

Speedlimit

    Likes to chat

  • Members
  • 336 posts
  • Vehicle Driven:Mondeo 2011 LX TDCi
  • Name:Reg Griffiths
  • Location:Australia

Posted 10 April 2020 - 11:20 AM

'Checked the voltage (12.4v so slightly low and new battery ordered'

 

I think 12.4v is normal due to the smart charge system.



#4 Pat

Pat

    Just Joined TF!

  • Members
  • 2 posts
  • Vehicle Driven:Mondeo MK4

Posted 11 April 2020 - 09:37 AM

Cheers for the help.

 

Since a new battery is on its way, I'll leave the old one disconnected for a bit before putting the new one in.

 

@speedlimit, I should have said that the battery was 12.4 when I tested, but it dropped further over the next day, so thought it should be replaced.






0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users