I’ve got a 2015 Focus Titanium with a 125hp 1.0 EcoBoost engine. It’s in for repairs right now at my local Ford garage. The problems are that my ABS and Traction Control warning lights are on, and I’m also getting messages saying my Hill Start Assist and Active City Stop are offline. I also get a warning about my TPMS sensors, and there’s a lot of moisture and condensation inside the car. I think it’s going to be expensive to fix. I’ve had the car for about 2.5 years since my last Focus was totaled by someone in a Peugeot. It does have some sentimental value for me. Should I get it fixed or just cut my losses and get a new one?
I had a similar issue recently. The cost to replace the ABS module was $800, but I was lucky because I found an ABS module at a local junkyard for just $100. So it was $100 for the part and $700 for labor. Don’t ask me about the transmission rebuild though…
I had a 2012 Focus with similar ABS and Hill Start issues. It was just a simple fix with a new ABS sensor on the back wheel. The stop-start feature didn’t work until I replaced the battery this year. The moisture in my car was from a leak behind the back bumper. Check the spare wheel area for water. If it’s dry, you might not have the same issue. The car looks well cared for, so it’s probably worth the fix.
The ABS/TC and Hill Start issues might be caused by a bad wheel speed sensor. Those sensors are cheap and easy to replace if you’re comfortable doing it yourself. A scan tool will show you which one is broken. Also, a weak battery can cause those warnings, but I think it’s more likely an ABS sensor. As for the TPMS sensors, they eventually stop working. My 2012 Focus has a dead one, but I’m not replacing it until it’s time for new tires.
The issues you have sound pretty common. The ABS/traction control problem is likely a bad ABS sensor. Those are easy to find and replace. The TPMS sensors often fail because their batteries die. You could remove them if you don’t want to replace them. The moisture issue might be a leak in your rear vents. Check the rear footwells or boot area for wet spots. If your front footwells are wet, it could be a bad washer bottle. If it’s a heater core issue, you’d probably notice coolant leaking and no heat, but it sounds like that’s not the case.
@Marlow
I’m still getting heat, so I don’t think it’s the heater core. The moisture is mostly in the front and rear driver’s side footwells. They were soaked at one point but have dried out a bit now. I’m also noticing a lot of condensation on the windshield and sometimes on the side windows when the car’s not being used, especially in cold weather.
@Thorne
If I were you, I’d check under the boot floor for any water. If there’s moisture there, it could be from the rear vents. If not, it might be harder to track down, and you’ll need to test for leaks. Also, check around the rear lights and the seams of the boot for leaks. To test it, just hose down the car. If you see water leaking in the back, you know it’s coming from there. Same goes for the front and sides.
At least get the ABS issue checked by a garage. It might be something simple, like an ABS sensor. I had two TPMS sensors replaced by a Ford dealer. It cost about £60 for each one, including parts and labor. For the moisture issue, check for water in the spare tire well or rear footwells. There are vents under the rear bumper that often cause leaks.
Not really related, but I love how the number plates on both cars are labeled 
Ming said:
Not really related, but I love how the number plates on both cars are labeled
Haha, the neighbor doesn’t even have that car anymore! I’ve actually changed the plate to a personalized one. The plate in the picture was its original one, but I still have it in the boot.
As others have said, check your rear taillights for leaks. They weren’t the problem for me, but I resealed them anyway. I have a bigger issue where the entire driver’s side footwell floods when it rains heavily. I’m going to investigate and let you know what I find. Like others said, it’s a matter of testing different spots on the car for leaks.