Volvo D13 Coolant Level Sensor Problems

Continuously facing Volvo D13 coolant level sensor problems with a critically low-level signal? Well, this can happen due to a few common culprits.

However, the primary cause of the low coolant level problem in the Volvo D13 sensor is often a malfunctioning magnetic float in the tank. Other causes include a stuck coolant level switch, a damaged sensor probe, or issues with the computer or ECM. It can also be a case of a complete failure of the unit.

In this guide, I’ll break down this issue and provide you with some solutions to try and fix it ASAP! Enjoy.

Most Common Cause Behind Volvo D13 Coolant Level Sensor Problems

When troubleshooting Volvo d13 coolant level sensor issues the most common one would be getting a false critical low-level warning. This is the case where you have checked for:

• Leaks.
• Any coolant loss.

Once you confirm these are not disturbing the coolant system, chances are, the problem is with the sensor roots from the coolant tank itself.

It’s often the case of malfunctioning magnetic float. As I was looking for specific 2018 Volvo d13 coolant level sensor problems to talk about, the float-related issue popped up more. And supposedly, you get the level warning more during acceleration.

However, before you put all your attention towards the magnetic float, don’t forget to check a few more things.

These can also be responsible for Volvo d13 coolant level sensor dysfunction:

1. The coolant level switch could be stuck. A quick fix would be giving the overflow tank a firm tap to dislodge the obstruction. If it does not work, you need to reach the switch to manually get rid of the jam.
2. The sensor probe could be brittle or damaged. Lift the expansion tank and find the unit to check. If this is the issue, you need to go for a complete replacement, unfortunately.
3. A damaged computer or ECM can also contribute to the issue. These are more complicated issues that require an expert inspection.

Both of these causes were more common for the 2014 Volvo d13 coolant level sensor problems with low-level warning.

On the other hand, a few users shared that 2013 Volvo d13 coolant level sensor problems have something to do with heavy rains. The problem tends to exacerbate during rains, for some reason. 

My best guess here is some sort of moisture or water ingress into the sensor. This might make the wiring compromised for sending the wrong signal, hence the trouble.

Moving on, as I was looking for more about the 2016 Volvo d13 coolant level sensor problems, here scenario was different. Owners commonly faced the issue of persistent warnings even after trying sensor replacements and fixing leaks or wire issues. The coolant tank shows full but the warning still exists.

Again, the issue was rooted in the coolant sensor float located in the tank.

To Fix Float Malfunction With Volvo D13 Coolant Level Sensor:

• Try recalibrating the float by removing the sensor and then sticking a magnet to the top of the float.
• A temporary fix that may or not work would be unplugging the sensor. The check engine light might be triggered. But you’ll be able to buy time to manage a more permanent fix.
• The most recommended fix would be buying a new tank. With a damaged magnetic float, it makes more sense to not take any chance and replace the whole unit.

Prevention Tip

I would suggest waterproofing any vulnerable wiring if you have access to this measurement. And of course, there’s no alternative to routine coolant level checks. 

Doing visual assessments of the sensor probe is also highly advised. Keep in mind, that it’s always easier to find a fix when the wear or damage is not severe.

One more suggestion is to keep the tank clean and free from any accumulation. Usually, the build-up is the main reason for the magnetic float to go bad.

Volvo D13 Coolant Level Sensor Problems Causing Complete Failure

In the worst-case scenario, you’ll have the coolant level sensor completely giving up. And then, you have no choice but to replace it.

So exactly what are the symptoms of a bad coolant level sensor for Volvo D13 that you should consider that leads to requiring a possible replacement?

Well, the most common symptoms of a bad coolant level sensor would be engine overheating, check engine light staying on, and exhaust leaking black smoke. This may accompany more issues such as hard starting, altering temperature gauge, and even rough idling. 

If you’d like to know more about what exactly these symptoms are, do check my guide on Volvo D16 engine issues. I’ve covered a few of them there. You’ll also find some explained in my take on issues with the Volvo D12 engine. 

Anyways, back to D13. If you have attempted multiple fixes with the coolant level sensor but somehow always end up with these scenarios, it’s quite likely that the unit needs to go. 

How Long Does Volvo D13 Coolant Level Sensor Last?

It is possible that the coolant level sensor has simply worn out due to excess usage. As there’s no exact answer to how long a coolant level sensor can last?

However, I do agree with CFSensor’s take on the unit’s longevity. 

According to them, the lifespan has to do with more than just a few factors including not just the make and model of the vehicle but also driving conditions and individual maintenance habits. 

They’ve also thrown a figure of the sensor lasting somewhere between 50k to 100k miles or more. So, if you need an idea, there you go!

Finally, the replacement would cost you around 150 dollars. Depending on your location the exact figures could slightly vary.

Volvo D13 Coolant Level Sensor Bypass Method – A Temporary Fix For Emergency

Before you find comprehensive solutions for Volvo d13 coolant sensor troubles by reaching a professional mechanic, you may require a temporary fix. That’s where the Volvo d13 coolant level sensor bypass might come to help.

For bypassing, you usually need to locate the plug that connects with the sensor. Release it to access the sensor. You can use a screwdriver for this. 

You should find a small button beneath the red tab. Press and hold on to it while pulling the plug. This should disengage the electrical connection and bypass the sensor. 

Wrapping Up

And that was my take on Volvo d13 coolant level sensor problems. As you can tell by now, it’s often a magnetic float issue. However, keep in mind taking proactive steps can avoid such scenarios. I would always pay attention to keeping the wiring dry during rainy seasons. 

Perhaps take one additional step and wrap the vulnerable area with convoluted tubing. There are many electrical tapes of great quality that can help here.

And the last tip of the day– always watch out for leaks and coolant loss. I can’t stress enough how long you can go with keeping these two tips in check. 

And this also goes for leaks that are often hard to notice. Some worse cases may involve loose clamps in different locations causing these not-visible leaks to manifest bigger trouble of sensor malfunction in the near future.

Related: Volvo D13 AC Not Working

I’ll end it here – see you in my next guide soon, take care!