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Expert Answers about Volvo


  • How to Correct Rattle from Newly Installed Draw-Tite Hitch on 2016 Volvo XC60
  • Don't worry. Since you know and trust your local mechanic who did the hitch install, chances are that the rattling noise you're now hearing after hitch installation is simply the fairly common issue of the muffler coming into contact with the hitch tube. This is not cause for concern and it is easily remedied. The linked article addresses this matter and offers several ways to fix it. Auto makers do not install their muffler hangers with the same precision that is applied to other components...
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  • No Brake Lights on Trailer After Installing Curt T-Connector on 2016 Volvo XC70
  • If your trailer doesn't have brake lights but does have turn signals, the most likely thing I can think of that may be the issue with the Curt # C56386 is the that the trailer has separate turn and brake lights. If it does, that would mean it is on a 3-wire system where the turn signals and brake lights are not on the same circuit. If that's the case what you would need is a converter for the trailer, the Curt # C56196 (note this is not compatible with LED lights).
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  • Is It Normal For Relays For Brake Lights To Be Warm
  • I'm glad to hear you found our answer page helpful! On you 2011 Volvo VNL it is normal for relays to be warm when it is on, but not be too hot to touch. If your relay is too hot to touch there is a few issue that could be going on. The relay may have an internal short that is allowing it to get hot which would require you to replace the relay in question. There may be a short in the circuit feeding the relay causing excess heat which would require you to follow the wire coming from...
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  • Troubleshooting Curt Vehicle Wiring Harness Causing Vehicle Turn Signals To Not Function.
  • It sounds as if one of the pins is either damaged on a connector or in the wrong place from the factory on the Curt T-Connector Vehicle Wiring Harness # C56224. First check the connectors on the Curt harness for any pins or receptacles that appear to be bent, broken, pushed out of their socket or damaged in any way. The only way to determine if one of the wires is installed in the wrong location is to trace the wires on the Curt harness. Since most of the wires used on the right side...
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  • Troubleshooting No Brake Lights on Trailer with Tekonsha Harness for Volvo 2008 V70
  • The brake lights and turn signals are sent along the same circuit for trailer wiring so it's a bit odd that the turn signals are working fine but the brake lights aren't powering on with the Tekonsha Harness # 118463 installed. Most likely the culprit is a bad or weak ground on the harness. Since brake lights require a more constant power draw when activated a weak ground might be allowing enough power for the turn signals but not enough to fully power the lights when the brakes are applied....
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  • Why Does Curt Hitch for 2011 Volvo XC60 Have Higher Towing Capacity Than Vehicle
  • Vehicle manufacturers do tend to be very cautious with towing capacities and our hitches are designed to fit the vehicle but then reinforced to be as strong as possible and then independently weight rated which is why you see the big difference between the hitch weight capacity and the vehicle capacity like this. We have to recommend you stick with the lowest rated component in your towing setup as the overall capacity.
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  • Yakima Ridgeback 4 Bike Rack Comes Loose from Hitch
  • I contacted my tech contact at Yakima and he said there could be a couple things going on with your Yakima RidgeBack 4 Bike Rack # Y02458. If your wedge tightens and engages, make sure you are locking the red knob after tightening. While this may be obvious, locking the red knob prevents the wedge from working itself loose while on the road. Beyond this, there could be an issue with the wedge assembly, however, I will need some photos of this part and bike rack to evaluate what the issue...
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  • C56045 Not Working on Volvo
  • It is possible the # C56045 is defective, yes. But you can check a few things first, and start by taking a look at your owner's manual to locate any fuses or relays and ensure they are all there and in working order. I know it's pretty basic and you likely have already done it but I did want to mention it. Next check the ground wire and make sure it is good (this was done on step 5 in the instructions) as a bad ground can lead to all types of funky issues. If that's good, and the fuses...
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  • Is 22mm Lug Nut Adapter Needed for Konig Tire Chains on 2018 Volvo XC90 with 275/40-21 Tires?
  • For your 2018 Volvo XC90 with 275/40-21 tires, I can't 100% confirm that you won't need the 22mm adapter, but chances are extremely slim. From all the online forums, the Volvo's have consistently used 19mm for years. The Konig Premium Self-Tensioning Snow Tire Chains - Diamond Pattern - D Link - K-Summit XXL - Size K67 # TH2004565767 are excellent tire chains that allow for zero internal clearance and are very effective. These chains come with the 17mm, 19mm, and 21mm adapters included....
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  • No Trailer Brakes When Echo Brake Controller is Paired
  • Thank you for your purchase from etrailer of the Curt Echo # C51180. Since the Echo and your phone are properly paired, the issue is almost certainly with your trailer's 7-way or wiring which is impeding the brake signal from getting through to your trailer brakes. Start by taking a look at your trailer's 7-way connector to to see if there is any type of damage or corrosion built up that may be hampering its functionality. If there is you will need to replace it with the 7-Way Molded Trailer...
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  • Tail and Brake Lights Not Working on a 2006 Volvo C70 or S80
  • It looks like the Volvo 780 stopped being produced in the early 1990s and was replaced by the C70. So it would appear that if you have a 2006 model year that is like the 780 it would be a C70. At any rate, the vehicle should have separate brake lights from the turn signals so basically every function would be on a separate circuit. The first thing you can check would be the bulbs (if it uses regular bulbs) and the bulb sockets to determine if there is corrosion or a burned out bulb or...
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  • Troubleshooting Whistling Thule Roof Rack on a 2012 Volvo XC60 with Sunroof
  • Roof racks and roof rack mounted accessories tend to be pretty noisy. Especially when you throw a sunroof into the mix. If the noise is the worst with the sunroof open then you will most likely have to close it. What you can try is repositioning the cargo box so that maybe the wind will hit it differently to see if the noise gets reduced. The install hardware of Thule boxes is adjustable front to back, so you will want to try moving it forward or back on your crossbars and maybe even try...
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  • Gooseneck Trailer Lights Get Brighter on One Side and Marker Lights Come on with Brake Lights
  • Checking the grounds was a good place to start. I think that it still may be a ground issue. There are several things you can check to determine if it is a ground problem. I would start with the trailer side connector and check for any dirt or corrosion and clean it out. Dirt and corrosion could cause a bad connection or a short which would lead to undesired results. Next, I would check the ground coming out of the back of the trailer connector. It should be connected to a clean and corrosion-free...
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  • Trailer Lights Not Working when Connected to a 2017 Volvo XC90
  • If the dealer installed the Volvo wiring harness on your 2017 Volvo XC90 then they may need to do something to make it active. I would inquire with them but they should have done that when the harness was installed. If you are using wiring harness # 118683 then make sure the fuse is inserted in its power wire and that the power wire is connected to the battery as indicated in the instructions. Also make sure the white ground wire is attached to a bare metal surface. Also make sure the...
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  • Troubleshooting Curt Trailer Wiring Harness # C56285 that Turn Signals Don't Work
  • Typically with T-one style trailer wiring harness like the part # C56285 with issues like this fix is to just disconnect and reconnect the connectors which ensures the pins end up fully seated. Otherwise you'll need to use a circuit tester like part # PTW2993 to test for voltage on input side of box and output. If input is there but nothing on output the issue is the converter box is shorted out.
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  • Prodigy RF 90250 Reads n.c. When Trailer is Connected to 2013 Volvo XC90
  • If you check out the instructions manual for your (discontinued) Prodigy RF 90250 it features a troubleshooting chart with common problems that people find. Among them is the n.c. signal that you referenced. I don't believe that you need a lamp out adapter as that has to do more with LED lights on your trailer causing your 2013 Volvo XC90 to read that a trailer light is burned out. What I recommend doing is to start off by using a Circuit Tester # PTW2992 to make sure that you have 12V...
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  • Troubleshooting Bike Rack Failure on a 2001 Volvo V70 T5 Using a Hitch Extender
  • I would not recommend using the Swagman XTC4 Bike Rack, # S64665, with your 2001 Volvo V70 T5 if it has a class I or class II trailer hitch with a 1-1/4 inch receiver. This is a pretty heavy bike rack at 65 lbs that was designed for 2 inch trailer hitch receivers only. You most likely have a 1-1/4 inch receiver, but if you have a trailer hitch with a 2 inch receiver, then I would not recommend using a hitch extender. You can determine the size of your trailer hitch receiver by measuring...
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  • Troubleshooting Vehicle Battery Drain After 7-Way and Brake Controller Installation
  • The 12V power circuit in an aftermarket 7-way connector like # 37185 will usually be connected to the vehicle battery through a 40-amp circuit breaker like # PK54540. This installation provides for 12V power at the connector contact at all times, even when the vehicle is off and even when no trailer is connected. Vehicles that have OEM wiring could be set up differently so that the ignition key controls the 12V feed to the trailer socket. Trailer brake controllers do draw some power at...
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  • Troubleshooting Excess Play with Trailer Coupler and Hitch Ball Connection
  • There will be a little bit of play with any hitch ball and coupler combination just because there needs to be some room for the trailer coupler to rotate, however it sounds like you might be getting a bit more than normal. I recommend first just making sure that you are using a compatible hitch ball size for the coupler on the trailer. Usually the size ball a coupler works with will be stamped underneath the coupler itself. Make sure it is compatible with a 2 inch hitch ball like what you...
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  • Troubleshooting Brakes Not Working Properly Using Hayes Air Actuated Brake Controller
  • Start by making sure the ground connection is secure. Assuming it is, I would check the power on the brake controller with a circuit tester like the # PTW2993. I'm guessing it lights up but you can still make sure it is getting enough power by testing the black wire running to it. Once that is done, check for power on the blue brake output wire exiting the controller while using the manual override. If there is no power here it is likely an internal issue. I would contact Hayes to see...
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